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Tait TM8200 mobiles Service Manual

Summary of TM8200 mobiles

  • Page 1

    Tm8100mobiles tm8200 mobiles service manual mma-00005-05 issue 5 november 2007.

  • Page 2

    2 tm8100/tm8200 service manual © tait electronics limitednovember 2007 contact information tait radio communications corporate head office tait electronics limited p.O. Box 1645 christchurch new zealand for the address and telephone number of regional offices, refer to the taitworld website: website...

  • Page 3: Contents

    Tm8100/tm8200 service manual 3 © tait electronics limited november 2007 contents preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 scope of manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 hardw...

  • Page 4

    4 tm8100/tm8200 service manual © tait electronics limited november 2007 28 tmaa03-34 extender box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 567 29 tmaa04-04 crossband linking cable . . . . . . . . . . . . . . . . . . . . . . 573 30 tmaa04-05 ignition sense kit . . . . . . . . . . ....

  • Page 5: Preface

    Tm8100/tm8200 service manual 5 © tait electronics limited november 2007 preface scope of manual this manual contains information to service technicians for carrying out level-1 and level-2 repairs of tm8100 and tm8200 radios and accessories. Level-1 repairs entail the replacement of faulty parts and...

  • Page 6: Associated Documentation

    6 tm8100/tm8200 service manual © tait electronics limited november 2007 associated documentation the following associated documentation is available for this product: manuals ■ mma-00002-xx tm8100 user’s guide ■ mma-00003-xx tm8200 user’s guide ■ mma-00051-xx tm8235 user’s guide ■ mma-00028-xx tm810...

  • Page 7: Publication Record

    Tm8100/tm8200 service manual 7 © tait electronics limited november 2007 3dk manuals the following manuals are mainly of concern to third-party developers. The manuals are supplied on the 3dk (third-party developer’s kit) resource cd. ■ mma-00011-xx tm8100/tm8200 3dk hardware developer’s kit applicat...

  • Page 8: Abbreviations

    8 tm8100/tm8200 service manual © tait electronics limited november 2007 note this alert is used to highlight information that is required to ensure that procedures are performed correctly. Abbreviations abbreviation description acp adjacent channel power adc analog-to-digital converter agc automatic...

  • Page 9

    Tm8100/tm8200 service manual 9 © tait electronics limited november 2007 iq in-phase and quadrature isc international service centre lcd liquid-crystal display led light-emitting diode lna low-noise amplifier lo local oscillator lpf low-pass filter npn negative-positive-negative pa power amplifier pc...

  • Page 10

    10 tm8100/tm8200 service manual © tait electronics limited november 2007.

  • Page 11

    Tm8100/tm8200 service manual 11 © tait electronics limitednovember 2007 part a – description of the radio 1 introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 1.1 frequency bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 12

    12 tm8100/tm8200 service manual © tait electronics limitednovember 2007.

  • Page 13: Introduction

    Tm8100/tm8200 service manual introduction 13 © tait electronics limitednovember 2007 1 introduction the tm8100 and tm8200 series is a range of high-performance microprocessor-controlled radios for analog voice and data communication. The radios are designed for installation in vehicles but can also ...

  • Page 14

    14 introduction tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 1.2 tm8100 mobile radios rear view (25w radio) tm8115 radio with 2-digit-display control head tm8110 radio with 1-digit-display control head tm8105 radio with blank control head.

  • Page 15: 1.1

    Tm8100/tm8200 service manual introduction 15 © tait electronics limitednovember 2007 1.1 frequency bands the radios are available in the following frequency bands: ■ 66 to 88mhz (a4) ■ 136 to 174mhz (b1) ■ 174 to 225mhz (c0) ■ 216 to 266mhz (d1) ■ 350 to 400mhz (g2) ■ 400 to 470mhz (h5) ■ 450 to 530...

  • Page 16: 1.3

    16 introduction tm8100/tm8200 service manual © tait electronics limitednovember 2007 1.3 accessories tait offers a large variety of audio accessories, installation kits, internal options boards and other accessories such as a desktop power supply. For more information on these accessories refer to “...

  • Page 17: 1.4

    Tm8100/tm8200 service manual introduction 17 © tait electronics limitednovember 2007 1.4 product codes this section describes the product codes used to identify products of the tm8100 and tm8200 mobile radio product lines. General the product codes of the tm8100 and tm8200 mobile radio product lines...

  • Page 18

    18 introduction tm8100/tm8200 service manual © tait electronics limitednovember 2007 note product codes not listed here identify control-head configurations of the digital tm9100 product line. Bc: control-head user interface and hardware options dd badging and configuration variants 10 blank control...

  • Page 19: 1.5

    Tm8100/tm8200 service manual introduction 19 © tait electronics limitednovember 2007 1.5 labels four external labels are attached to the bottom of the radio body: ■ compliance information ■ serial number and product code ■ hot surface safety warning ■ rf exposure safety warning. 1.6 specifications f...

  • Page 20

    20 introduction tm8100/tm8200 service manual © tait electronics limitednovember 2007.

  • Page 21: Description

    Tm8100/tm8200 service manual description 21 © tait electronics limitednovember 2007 2 description this section describes the mechanical design and architecture of the radio, explains the operation of the transceiver and the control head, and gives pinouts of the radio connectors. 2.1 mechanical desi...

  • Page 22

    22 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 2.1.1 radio body overview the radio body consists of the following main components (see figure 2.2 on page 23 ): ■ cover b ■ lid d ■ internal options board (optional) ■ chassis g ■ main-board assembly f . Cover the b...

  • Page 23

    Tm8100/tm8200 service manual description 23 © tait electronics limitednovember 2007 figure 2.2 components of the radio body b cover g chassis c screw m4x16 (x4) h auxiliary connector bung d lid assembly i screws m4x16 (x2) e screw m3x10 (x5) j seal f main-board assembly 1) gap pad (>25w radio only) ...

  • Page 24

    24 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 the front of the chassis has an aperture for the control-head connector. The control-head seal is fitted inside a groove around the flange at the front face of the chassis and provides for ip54 class protection when ...

  • Page 25

    Tm8100/tm8200 service manual description 25 © tait electronics limitednovember 2007 main-board assembly the main-board assembly consists of the following components (see figure 2.3 ): ■ main board 1^ with smt components, digital board d , shielding cans, and connectors ■ heat-transfer block h ■ moun...

  • Page 26

    26 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 the main board 1^ is attached to the heat-transfer block h with three m3x10 torx-head screws b and the fastening elements j , 1# and 1$ of the auxiliary and rf connectors. The inner foam d-range seal g seals the auxi...

  • Page 27

    Tm8100/tm8200 service manual description 27 © tait electronics limitednovember 2007 2.1.2 control head with graphical display overview the control head can be divided into the following main areas: ■ front panel with control elements, indicators, lcd, speaker, and concealed microphone (optional) ■ s...

  • Page 28

    28 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 speaker the speaker 1! Sits inside a round recess of the front panel assembly, where a cloth membrane is fixed to the speaker grille. The speaker clamp 1) holds the speaker in position. The speaker cable plugs into t...

  • Page 29

    Tm8100/tm8200 service manual description 29 © tait electronics limitednovember 2007 figure 2.4 components of the control head with graphical display b m4 x 12 taptite screw (x2) c adapter flange d control-head loom assembly with female-female adapter e 3 x 10 pt screw (x4) f control-head board g spa...

  • Page 30

    30 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 control-head board the control-head board f is a printed circuit board in smt design with components on the top and bottom sides. Some smt components are shielded by metal cans. The control-head board is fitted to th...

  • Page 31

    Tm8100/tm8200 service manual description 31 © tait electronics limitednovember 2007 2.1.3 control heads with 1-, 2- or 3-digit display overview the control heads with 1-, 2- or 3-digit display can be divided into the following main areas: ■ front panel with control elements, indicators, speaker, and...

  • Page 32

    32 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 speaker the speaker i sits inside a round recess of the front panel assembly, where a cloth membrane is fixed to the speaker grille. The space frame g and the speaker clamp h hold the speaker in position. The speaker...

  • Page 33

    Tm8100/tm8200 service manual description 33 © tait electronics limitednovember 2007 figure 2.6 components of the control head (1-, 2- or 3-digit display) b control-head loom with female-female adapter c control-head options board (optional) d 3 x 8 pt screw (x3) e control-head board f elastomeric st...

  • Page 34

    34 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 2.1.4 rj45 control head the rj45 control head consists of the following parts: ■ front panel ■ control-head loom with female-female adaptor ■ control-head board ■ pcb bracket. The circled numbers in this section refe...

  • Page 35

    Tm8100/tm8200 service manual description 35 © tait electronics limitednovember 2007 figure 2.7 components of the rj45 control head b control-head board e pcb bracket c control-head loom with female-female adapter f front panel d 3 x 8 pt screw (x4) g rj45 bung (x2) b d e f g x4 c x2.

  • Page 36

    36 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 2.1.5 blank control head the blank control head consists of the following parts: ■ front panel ■ control-head loom with programming connector ■ seals. The circled numbers in this section refer to the items in figure ...

  • Page 37: 2.2

    Tm8100/tm8200 service manual description 37 © tait electronics limitednovember 2007 2.2 user interfaces figure 2.9 shows the controls and indicators of the user interfaces. For more information refer to the following user’s guides: ■ tm8100 (1-digit and 2-digit-display control head) ■ tm8250/tm8255 ...

  • Page 38: 2.3

    38 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 2.3 connectors overview this section describes the specifications and pinouts of the connectors of the radio body and the control head. Figure 2.10 provides an overview of the connectors: figure 2.11 shows the connec...

  • Page 39

    Tm8100/tm8200 service manual description 39 © tait electronics limitednovember 2007 figure 2.11 connectors of the radio body (25w radio) control-head connector provision for external options connector provision for additional connector power connector auxiliary connector rf connector internal option...

  • Page 40

    40 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 2.12 connectors of the control head with graphical display figure 2.13 connectors of the control head with 1-, 2- or 3-digit display front view rear view without adapter flange microphone connector control-hea...

  • Page 41

    Tm8100/tm8200 service manual description 41 © tait electronics limitednovember 2007 2.3.1 rf connector the rf connector is the primary rf interface to the antenna. The rf connector is a bnc connector or a mini-uhf connector with an impedance of 50 Ω. Important the maximum rf input level is +27dbm. H...

  • Page 42

    42 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 2.3.3 auxiliary connector the auxiliary connector is the standard interface for external devices that are typically connected to a radio. The auxiliary connector is a 15-way standard-density d-range socket. The auxil...

  • Page 43

    Tm8100/tm8200 service manual description 43 © tait electronics limitednovember 2007 2.3.4 internal options connector when installing an internal options board, the internal options connector is the electrical interface to the main board of the radio body. The internal options connector provides simi...

  • Page 44

    44 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 2.3.6 control-head connectors the control-head loom connects the connector on the front of the radio body to the connector on the rear of the control head. The connector on the front of the radio body is an 18-way tw...

  • Page 45

    Tm8100/tm8200 service manual description 45 © tait electronics limitednovember 2007 2.3.7 microphone connector the microphone connector of the control head is an rj45 socket. When the control head is connected to the control-head connector of the radio body using the loom provided, the microphone co...

  • Page 46

    46 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 2.3.9 programming connector (blank control head) the programming connector of the blank control head is a 9-way standard- density d-range plug. When the blank control head is connected to the radio body, the programm...

  • Page 47: 2.4

    Tm8100/tm8200 service manual description 47 © tait electronics limitednovember 2007 2.4 hardware and software architecture overview this section describes the hardware and software modules of the radio and their interaction in the functioning of the radio. 2.4.1 hardware architecture the electrical ...

  • Page 48

    48 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 2.14 hardware architecture of the main board power supply receiver tr ansmitter frequency synthesizer dsp codec and audio interface digital boar d rf connector power connector control-head connector lpf 1) pin...

  • Page 49

    Tm8100/tm8200 service manual description 49 © tait electronics limitednovember 2007 2.4.2 software architecture overview software plays an important role in the functioning of the radio. Some radio functions such as the graphical user interface, processing of the analog and digital signals, and the ...

  • Page 50

    50 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 software start-up when the radio is turned on, the following processes are carried out on the main board: note this process describes the software start-up into normal radio operation mode. 1. The fpga image, which i...

  • Page 51

    Tm8100/tm8200 service manual description 51 © tait electronics limitednovember 2007 when the radio is turned on, the following processes are carried out on the control-head board of the control head with graphical display: 1. The fpga image, which includes the risc processor, is loaded from the seri...

  • Page 52: 2.5

    52 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 2.5 operation in receive mode overview this section describes the functioning of the transceiver in receive mode. The operation of the transceiver is illustrated in figure 2.16 on page 53 . For the k5 front end, refe...

  • Page 53

    Tm8100/tm8200 service manual description 53 © tait electronics limitednovember 2007 figure 2.16 transceiver operation.

  • Page 54

    54 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 2.5.1 rf hardware pin switch the rf pin switch circuitry selects the rf path to and from the antenna to either the tx or rx circuitry of the radio. In addition to the switching functionality, the pin switch is used t...

  • Page 55

    Tm8100/tm8200 service manual description 55 © tait electronics limitednovember 2007 2.5.2 digital baseband processing custom logic the remainder of the receiver processing up to demodulation is performed by custom logic. The digitized quadrature signal from the rf hardware is digitally down-converte...

  • Page 56

    56 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 2.5.3 audio processing and signalling audio processing raw demodulated data from the receiver is processed within the dsp. The sample rate at this point is 48khz with signal bandwidth limited only by the if filtering...

  • Page 57: 2.6

    Tm8100/tm8200 service manual description 57 © tait electronics limitednovember 2007 2.6 operation in transmit mode overview this section describes the functioning of the transceiver in transmit mode. The operation of the transceiver is illustrated in figure 2.16 on page 53 . These block diagrams sho...

  • Page 58

    58 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 2.6.1 audio processing and signalling microphone input the input to the transmitter path begins at the microphone input. There are two microphone sources: a fist microphone connected to the control head and an auxili...

  • Page 59

    Tm8100/tm8200 service manual description 59 © tait electronics limitednovember 2007 2.6.2 frequency synthesizer introduction as shown in figure 2.16 , the frequency synthesizer consists of two main parts: ■ fcl (frequency control loop) ■ rf pll, comprising rf pll device, loop filter, vco, and vco ou...

  • Page 60

    60 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 band, the frequency is divided down to 72khz. This is because the sensitivity (k vco = 4mhz/v) is four times lower than that of the transmit vco. The reference frequency input from the fcl is also divided down to app...

  • Page 61

    Tm8100/tm8200 service manual description 61 © tait electronics limitednovember 2007 reference frequency to the rf pll. The fcl supplies the reference frequency and is able to adjust it up to ±300ppm with better than 0.1ppm resolution (equivalent to better than 50hz resolution at the rf frequency). T...

  • Page 62

    62 description tm8100/tm8200 service manual © tait electronics limitednovember 2007 2.6.3 rf transmitter rf power amplifier and switching (>25w radio) the rf power amplifier and exciter of the 40w/50w radio is a five-stage line-up with approximately 40db of power gain. The output of the frequency sy...

  • Page 63

    Tm8100/tm8200 service manual description 63 © tait electronics limitednovember 2007 ramping power ramp-up consists of two stages: ■ bias ■ power ramping. The timing between these two stages is critical to achieving the correct overall wave shape in order to meet the specification for transient acp (...

  • Page 64

    64 description tm8100/tm8200 service manual © tait electronics limitednovember 2007.

  • Page 65: Circuit Descriptions

    Tm8100/tm8200 service manual circuit descriptions 65 © tait electronics limitednovember 2007 3 circuit descriptions introduction this section describes and illustrates the circuitry of the main board and the control-head boards. The main board is divided into the following circuitry modules: ■ trans...

  • Page 66

    66 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 3.1 main board hardware architecture power supply receiver tr ansmitter frequency synthesizer dsp codec and audio interface digital boar d rf connector power connector control-head connector lpf 1) pi...

  • Page 67: 3.1

    Tm8100/tm8200 service manual circuit descriptions 67 © tait electronics limitednovember 2007 3.1 transmitter circuitry introduction for a block diagram of the transmitter circuitry, refer to figure 3.2 . The transmitter circuitry is different for the 40w/50w radios, the 30w/35w radios (available for...

  • Page 68

    68 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 3.2 block diagram of the transmitter circuitry rf connector receiver lpf directional coupler pa forw ard p ower buffer amplifier power control pin switch driver exciter bias limiter shaper and level s...

  • Page 69

    Tm8100/tm8200 service manual circuit descriptions 69 © tait electronics limitednovember 2007 the high-level rf signal passes via the directional coupler, the transmit- receive pin switch, and the lpf, through to the antenna. The lpf is used to attenuate unwanted harmonic frequencies. Power control l...

  • Page 70: 3.2

    70 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 3.2 receiver circuitry introduction for a block diagram of the receiver circuitry, refer to figure 3.3 (b1, h5, h6 bands, 05 issue pcbs) and figure 3.4 (other bands and later issue pcbs). The receiver is of ...

  • Page 71

    Tm8100/tm8200 service manual circuit descriptions 71 © tait electronics limitednovember 2007 figure 3.3 block diagram of the receiver circuitry (05 issue boards, b1, h5, h6 bands) (no t used) bpf lna ima ge fil ter first if st a ge bpf 1 if amplifier first if st a ge bpf 2 q u adra ture demodula t o...

  • Page 72

    72 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 3.4 block diagram of the receiver circuitry (b1, h5, h6 bands after pcb issue 05 and other bands).

  • Page 73

    Tm8100/tm8200 service manual circuit descriptions 73 © tait electronics limitednovember 2007 frequencies of if stages the frequency of the first if stage depends as follows on the frequency band of the radio: ■ vhf bands: 21.400029mhz ■ uhf and k5 bands: 45.100134mhz. The above are nominal values; t...

  • Page 74

    74 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 received signal strength indication the rssi is calculated in the fpga and dsp, and can be passed as an analog voltage to the internal options interface and the external auxiliary interface. To obtain an acc...

  • Page 75: 3.3

    Tm8100/tm8200 service manual circuit descriptions 75 © tait electronics limitednovember 2007 3.3 frequency synthesizer circuitry introduction for a block diagram of the frequency synthesizer circuitry, refer to figure 3.5 , and figure 3.6 (fcl for the a4 band) and figure 3.7 (vco for the k5 band). T...

  • Page 76

    76 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 synthesizer circuitry the essential function of the pll frequency synthesizer is to multiply a 25khz reference frequency (30khz for a4 band, 72khz for k5 rx) to give any desired frequency that is an integer ...

  • Page 77

    Tm8100/tm8200 service manual circuit descriptions 77 © tait electronics limitednovember 2007 figure 3.5 block diagram of the frequency synthesizer circuitry coupler pll mod 5 v switch syn tx lo syn rx lo1 tr switch vco (vhf only) dig syn tr sw pll summer 5v vp suppl y loop filter vco supply filter +...

  • Page 78

    78 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 re-tuning of vco frequency when the radio changes channels or switches between receive and transmit, the vco frequency must be changed. The rate at which the vco is re- tuned is dependent on many factors, of...

  • Page 79

    Tm8100/tm8200 service manual circuit descriptions 79 © tait electronics limitednovember 2007 speed-up techniques to reduce the change-over time between transmit and receive, part-time speed-up techniques have been implemented. Speed-up involves changing some resistor values while simultaneously chan...

  • Page 80: 3.4

    80 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 3.4 frequency control loop introduction the fcl is included in the block diagram of the frequency synthesizer (see figure 3.5 and figure 3.6 ). The fcl forms part of the frequency-synthesizer module. The bas...

  • Page 81: 3.5

    Tm8100/tm8200 service manual circuit descriptions 81 © tait electronics limitednovember 2007 3.5 codec and audio circuitry introduction for a block diagram of the codec and audio circuitry, refer to figure 3.8 . A/d and d/a conversion the analog-to-digital conversion and digital-to-analog conversion...

  • Page 82

    82 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 3.8 block diagram of the codec and audio circuitry da c codec 1 codec 2 level shifter 2v3 supply voltage divider buffer amplifier summer audio p a bias network lpf buffer amplifier codec and audio cdc...

  • Page 83

    Tm8100/tm8200 service manual circuit descriptions 83 © tait electronics limitednovember 2007 audio signal for speaker the audio signal for the speaker is generated by ic204 ( voutauxp ball). This signal is post-volume-control and has a pre-emphasized frequency response. The signal is then processed ...

  • Page 84

    84 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 auxiliary audio output the source for the auxiliary audio output signal cdc aud tap out is provided by ic204 ( rampdac ball). The dac output of ic204 is low-pass filtered to remove high-frequency artefacts. ...

  • Page 85: 3.6

    Tm8100/tm8200 service manual circuit descriptions 85 © tait electronics limitednovember 2007 3.6 power supply circuitry introduction for a block diagram of the power supply circuitry, refer to figure 3.9 . The power-supply circuitry consists of the following main sections: ■ supply protection ■ supe...

  • Page 86

    86 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 3.9 block diagram of the power supply circuitry power supply trans- mitter frequency synthesizer codec and audio receiver digital board debug connector interface smps 3 v regulator 9 v regulator 9 v t...

  • Page 87

    Tm8100/tm8200 service manual circuit descriptions 87 © tait electronics limitednovember 2007 the emergency power-sense option can be used in conjunction with any of the other four options. The different power-sense options have to be facilitated by hardware means, as the software cannot act before i...

  • Page 88

    88 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 table 3.2 shows the configuration of the hardware links lk1, lk2 and lk4 for the individual power-sense options. It also lists the dependence of the power-sense options with respect to the gpi lines, which c...

  • Page 89

    Tm8100/tm8200 service manual circuit descriptions 89 © tait electronics limitednovember 2007 battery power sense with this option, link lk1 connects +13 v 8 batt of the power connector to the power-up circuitry. With this option, when a 13.8v supply is connected to the radio, the radio enters the pr...

  • Page 90: 3.7

    90 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 connector power supply options power from the radio’s primary power source is fed to the auxiliary, internal options, control head and microphone connectors. Whether power to these connectors is unswitched, ...

  • Page 91

    Tm8100/tm8200 service manual circuit descriptions 91 © tait electronics limitednovember 2007 bi-directional lines bi-directional lines are provided on four pins of the auxiliary connector, ( aux gpio 4 to aux gpio 7) one on the control-head connector ( ch gpio 1), and seven on the internal options c...

  • Page 92

    92 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 3.12 block diagram of the interface circuitry +13v8 batt agnd +3v3 +13v8 sw aux gpi2 aux gpi3 ch on off itf iop gpio7 aud itf spk+ aud itf spk- itf vol wip dc agnd itf ch mic aud cdc rx aud itf rx bee...

  • Page 93: 3.8

    Tm8100/tm8200 service manual circuit descriptions 93 © tait electronics limitednovember 2007 input signals ( aux gpi 1 to aux gpi 3 ) dedicated inputs are provided on three pins of the auxiliary connector ( aux gpi 1 to aux gpi 3). Aux gpi 1 is a general-purpose input with strong protection of the s...

  • Page 94

    94 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 3.13 block diagram of the digital board (tm8200 radios) +1v8 +3v3 trans- mitter dig tx inh dig syn en syn lock dig syn tr sw dig syn fast dig syn latch syn dig fref frequency synthesizer dig syn spi d...

  • Page 95

    Tm8100/tm8200 service manual circuit descriptions 95 © tait electronics limitednovember 2007 figure 3.14 block diagram of the digital board (tm8100 radios) trans- mitter dig tx inh dig syn en syn lock dig syn tr sw dig syn fast dig syn latch syn dig fref fre- quency synthe- sizer dig syn spi do dig ...

  • Page 96: 3.9

    96 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 3.9 control-head board with graphical display introduction this section describes the control-head board for the control head with graphical display. For a block diagram of the digital circuitry, refer to fi...

  • Page 97

    Tm8100/tm8200 service manual circuit descriptions 97 © tait electronics limitednovember 2007 figure 3.15 block diagram of the control-head board with graphical display on/off keypad volume potentio- meter lcd lcd loom lcd connector function key and status leds keypad backlighting leds main keypad le...

  • Page 98

    98 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 power supply a 3.3v regulator (u1) converts the switched 13.8v supply from the radio body to 3.3v. A 1.5v regulator (u203) converts the 3.3v to 1.5v. A power-sense module (u202) verifies the outputs of the v...

  • Page 99: 3.10

    Tm8100/tm8200 service manual circuit descriptions 99 © tait electronics limitednovember 2007 3.10 control-head board with 1-, 2- or 3-digit display introduction this section describes the circuitry of the control-head boards for the control heads with 1-, 2- or 3-digit display. The boards differ in ...

  • Page 100

    100 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 3.16 block diagram of the control-head board with 1-, 2- or 3-digit display r52 c50 r53 (not implemented) link control- head options connector control- head options board (optional) microphone connec...

  • Page 101

    Tm8100/tm8200 service manual circuit descriptions 101 © tait electronics limitednovember 2007 serial peripheral interface the control-head board uses an spi (serial peripheral interface) to control the display on the lcd, turn back-lighting on and off, control the status leds, and read the status of...

  • Page 102: 3.11

    102 circuit descriptions tm8100/tm8200 service manual © tait electronics limitednovember 2007 3.11 rj45 control head introduction this section describes the circuitry of the control-head board for the rj45 control head. User interface the control-head board includes a power on / off led which indica...

  • Page 103

    Tm8100/tm8200 service manual 103 © tait electronics limitednovember 2007 part b – servicing the radio 4 general information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107 4.1 repair levels, accreditation, and website access . . . . . . . . . . . . . . . . . 107 4.2 tools,...

  • Page 104

    104 tm8100/tm8200 service manual © tait electronics limitednovember 2007 10 receiver fault finding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .247 10.1 faulty receiver sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248 10.2 excessive loss of se...

  • Page 105

    Tm8100/tm8200 service manual 105 © tait electronics limitednovember 2007 15 fault finding of control head with 1-, 2- or 3-digit display . . . . . . . .447 15.1 display faulty but not leds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450 15.2 some leds faulty. . . . . . . . . . . ...

  • Page 106

    106 tm8100/tm8200 service manual © tait electronics limitednovember 2007.

  • Page 107: General Information

    Tm8100/tm8200 service manual general information 107 © tait electronics limitednovember 2007 4 general information this chapter describes techniques and processes, and provides other information that will enable you top service the radio correctly. It includes the following sections: ■ repair levels...

  • Page 108

    108 general information tm8100/tm8200 service manual © tait electronics limitednovember 2007 level 2 requirements level-2 repairs comprise repairs of control-head boards and, except for special items, main-board assemblies. The special items are: ■ digital board ■ rf pas (q309 and q310) ■ codec 1 (i...

  • Page 109

    Tm8100/tm8200 service manual general information 109 © tait electronics limitednovember 2007 the website includes: ■ application notes ■ calibration software ■ firmware ■ fitting instructions ■ installation guides ■ pcb information ■ programming software ■ programming user manuals ■ service manuals ...

  • Page 110: 4.2

    110 general information tm8100/tm8200 service manual © tait electronics limitednovember 2007 4.2 tools, equipment and spares torque drivers the following torque drivers are required for level-1 repairs, and for level-2 repairs excluding smt circuit boards repairs. ■ torx t6, torx t10, and torx t20 d...

  • Page 111

    Tm8100/tm8200 service manual general information 111 © tait electronics limitednovember 2007 service kit the tm8100/tm8200 service kit (tmaa21-00) includes: ■ the special tools needed to service the radio ■ a test unit, and the items needed to connect a radio to a test unit ■ the programming and cal...

  • Page 112: 4.3

    112 general information tm8100/tm8200 service manual © tait electronics limitednovember 2007 4.3 servicing precautions introduction this section discusses the precautions that need to be taken when servicing the radios. These precautions fall into the following categories: ■ mechanical issues ■ comp...

  • Page 113

    Tm8100/tm8200 service manual general information 113 © tait electronics limitednovember 2007 important this equipment contains devices that are susceptible to damage from electrostatic discharge (esd). Handle every device carefully and in strict accordance with the procedures defined in the data boo...

  • Page 114

    114 general information tm8100/tm8200 service manual © tait electronics limitednovember 2007 is or has been operating. Avoid rf burns. Do not touch the antenna while the transmitter is operating. Important the radio has been designed to operate with a 50 Ω termination impedance. Do not operate the t...

  • Page 115: 4.4

    Tm8100/tm8200 service manual general information 115 © tait electronics limitednovember 2007 4.4 setting up the test equipment this section covers the setting up of the test equipment for servicing the radios, as well as related aspects: ■ setting up of test equipment, including test unit ■ basic pr...

  • Page 116

    116 general information tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 4.2 test setup radio connector (db15) rf connector (mini uhf or bnc) auxiliary connector (db15) microphone connector (rj45) receive audio / sinad connector (bnc) transmit audio connector (bnc) compute...

  • Page 117: 4.5

    Tm8100/tm8200 service manual general information 117 © tait electronics limitednovember 2007 4.5 replacing board components to obtain a replacement board component, complete the following steps in the order shown: 1. Check the issue number. 2. Identify the damaged component. 3. Consult the technical...

  • Page 118

    118 general information tm8100/tm8200 service manual © tait electronics limitednovember 2007 verify the specifications before ordering the part, make sure that the specifications of the damaged part are identical to the specifications given in the bom. It is particularly important for tolerances to ...

  • Page 119: 4.6

    Tm8100/tm8200 service manual general information 119 © tait electronics limitednovember 2007 4.6 shielding cans and connectors the shielding cans on the top- and bottom-side of the main-board assembly are identified in figure 4.3 and figure 4.4 . The figures also show the locations of the connectors...

  • Page 120

    120 general information tm8100/tm8200 service manual © tait electronics limitednovember 2007 can removal and installation cans are best removed and installed using a can-removal tool. If this tool is available, technicians should refer to the documentation supplied with the tool for the correct proc...

  • Page 121: 4.7

    Tm8100/tm8200 service manual general information 121 © tait electronics limitednovember 2007 spare cans it is good practice to discard any can that has been removed and replace it with a spare can. If this is not done, special precautions are needed when re- installing the original can. These precau...

  • Page 122

    122 general information tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 4.5 locations of the capacitors c548 and c565 and the inductors l601 and l602 top side (vhf board. Uhf board similar) note that other components may be fitted for c548 (such as c5085 and c5086 for uhf...

  • Page 123: 4.8

    Tm8100/tm8200 service manual general information 123 © tait electronics limitednovember 2007 4.8 computer-controlled test mode (cctm) the servicing procedures require a radio to be placed in the computer- controlled test mode. In this mode cctm commands can be entered at the test pc. These commands ...

  • Page 124

    124 general information tm8100/tm8200 service manual © tait electronics limitednovember 2007 table 4.2 cctm commands in the audio category command usage entry at keyboard response on screen audio category 20 – mute received audio forces muting of the received audio signal 20 none 21 – unmute receive...

  • Page 125

    Tm8100/tm8200 service manual general information 125 © tait electronics limitednovember 2007 table 4.3 cctm commands in the radio-information, radio-control and system categories command usage entry at keyboard response on screen radio-information category 94 – radio serial number reads the serial n...

  • Page 126

    126 general information tm8100/tm8200 service manual © tait electronics limitednovember 2007 table 4.4 cctm commands in the frequency-synthesizer and receiver categories command usage entry at keyboard response on screen frequency-synthesizer category 72 – lock status reads the lock status of the rf...

  • Page 127

    Tm8100/tm8200 service manual general information 127 © tait electronics limitednovember 2007 table 4.5 cctm commands in the transmitter category (part 1) command usage entry at keyboard response on screen transmitter category 33 – transmit mode sets the radio in the transmit mode 33 none 47 – temper...

  • Page 128

    128 general information tm8100/tm8200 service manual © tait electronics limitednovember 2007 table 4.6 cctm commands in the transmitter category (part 2) command usage entry at keyboard response on screen transmitter category 331 – final bias 1 sets or reads the bias voltage for the first pa 331 (to...

  • Page 129

    Tm8100/tm8200 service manual general information 129 © tait electronics limitednovember 2007 table 4.7 cctm commands for the control head (graphical display) command usage entry at keyboard response on screen 1000 – switch all leds switches all the function-key and status leds on or off 1000 x where...

  • Page 130

    130 general information tm8100/tm8200 service manual © tait electronics limitednovember 2007 cctm error codes once the radio is in cctm, the cctm commands may be entered as shown in table 4.2 to table 4.6 . Depending on the command, a response might or might not be displayed. If an error occurs, an ...

  • Page 131: 4.9

    Tm8100/tm8200 service manual general information 131 © tait electronics limitednovember 2007 4.9 defining frequency bands where test procedures or figures differ according to the frequency band of the radio, the frequency band is given in brackets. The frequency band may be referred to as either ‘vh...

  • Page 132: 4.10

    132 general information tm8100/tm8200 service manual © tait electronics limitednovember 2007 4.10 visual and audible indications visual and audible indicators give information about the state of the radio. Visual indications are provided by the status leds, function-key leds, and lcd display. The in...

  • Page 133

    Tm8100/tm8200 service manual general information 133 © tait electronics limitednovember 2007 table 4.12 audible indications type of tone meanings one short beep (1) after power-up — radio is locked; pin is required (2) on power-down — radio is off (3) on pressing key — key-press is valid (4) on pres...

  • Page 134

    134 general information tm8100/tm8200 service manual © tait electronics limitednovember 2007.

  • Page 135: Disassembly and Reassembly

    Tm8100/tm8200 service manual disassembly and reassembly 135 © tait electronics limitednovember 2007 5 disassembly and reassembly this section describes how to: ■ remove and mount the control head ■ disassemble and reassemble the radio body ■ disassemble and reassemble the control heads. General impo...

  • Page 136: 5.1

    136 disassembly and reassembly tm8100/tm8200 service manual © tait electronics limitednovember 2007 5.1 removing and mounting the control head important before removing the control head, disconnect the radio from any test equipment or power supply. Removing the control head 1. Note which way up the ...

  • Page 137: 5.2

    Tm8100/tm8200 service manual disassembly and reassembly 137 © tait electronics limitednovember 2007 5.2 disassembling the radio body disassemble only as much as necessary to replace the defective parts. For reassembly instructions, refer to “reassembling the radio body” on page 143 . Removing the co...

  • Page 138

    138 disassembly and reassembly tm8100/tm8200 service manual © tait electronics limitednovember 2007 opening the radio body the circled numbers in this section refer to the items in figure 5.3 on page 139 . 1. Use a torx t20 screwdriver to remove the four screws c . Important if an options board is f...

  • Page 139

    Tm8100/tm8200 service manual disassembly and reassembly 139 © tait electronics limitednovember 2007 figure 5.3 components of the radio body b cover g chassis c screw m4x16 (x4) h auxiliary connector bung d lid assembly i screws m4x16 (x2) e screw m3x10 (x5) j rf connector seal f main-board assembly ...

  • Page 140

    140 disassembly and reassembly tm8100/tm8200 service manual © tait electronics limitednovember 2007 disassembling the main-board assembly the circled numbers in this section refer to the items in figure 5.4 on page 141 . This figure shows the >25w configuration. 1. Remove the power connector seal i ...

  • Page 141

    Tm8100/tm8200 service manual disassembly and reassembly 141 © tait electronics limitednovember 2007 figure 5.4 components of the main-board assembly b m3x10 screw (x3) h d-range screwlock fastener (2x) c >25w radios: m2.2x10 pt screw (x2) 25w radios: k30x8 pt screw (x2) i power connector seal j powe...

  • Page 142

    142 disassembly and reassembly tm8100/tm8200 service manual © tait electronics limitednovember 2007 removing an options board (optional) the radio may be fitted with an options board in the lid assembly, which may or may not have an external options connector fitted in a provision in the lid assembl...

  • Page 143: 5.3

    Tm8100/tm8200 service manual disassembly and reassembly 143 © tait electronics limitednovember 2007 5.3 reassembling the radio body inspect all disassembled parts for damage and replace them, if necessary. Reassembling the main-board assembly the circled numbers in this section refer to the items in...

  • Page 144

    144 disassembly and reassembly tm8100/tm8200 service manual © tait electronics limitednovember 2007 4. If the thermal paste on the heat-transfer block f or the tin-plated cooper plate of the main board 1$ has been contaminated, new thermal paste must be applied: ■ remove any residue of the old therm...

  • Page 145

    Tm8100/tm8200 service manual disassembly and reassembly 145 © tait electronics limitednovember 2007 fitting the main- board assembly to the chassis the circled numbers in this section refer to the items in figure 5.3 on page 139 . This figure shows the >25w configuration. 1. With the >25w radio, the...

  • Page 146

    146 disassembly and reassembly tm8100/tm8200 service manual © tait electronics limitednovember 2007 5. While pressing down firmly on the diagonal edge of the pad top can (refer to figure 5.7 ), use a torx t20 torque-driver to tighten the two screws i to 22lb·in (2.5n · m). This will ensure that the ...

  • Page 147: 5.4

    Tm8100/tm8200 service manual disassembly and reassembly 147 © tait electronics limitednovember 2007 5.4 disassembling and reassembling the control head 5.4.1 control head with graphical display disassemble only as much as necessary to replace the defective parts. Reassembly is carried out in reverse...

  • Page 148

    148 disassembly and reassembly tm8100/tm8200 service manual © tait electronics limitednovember 2007 7. Unscrew the four screws e and remove the control-head board f . 8. If a concealed microphone is fitted, pull the concealed microphone 1% capsule out of its rubber seal when removing the control hea...

  • Page 149

    Tm8100/tm8200 service manual disassembly and reassembly 149 © tait electronics limitednovember 2007 figure 5.9 components of the control head (graphical display) b m4 x 12 taptite screw (x2) c adaptor flange d control-head loom assembly with female-female adapter e 3 x 10 pt screw (x4) f control-hea...

  • Page 150

    150 disassembly and reassembly tm8100/tm8200 service manual © tait electronics limitednovember 2007 5.4.2 control head with 1-, 2- or 3-digit display disassemble only as much as necessary to replace the defective parts. Reassembly is carried out in reverse order of the disassembly. The circled numbe...

  • Page 151

    Tm8100/tm8200 service manual disassembly and reassembly 151 © tait electronics limitednovember 2007 7. While pulling upwards on the space frame g at the corner where the microphone connector is situated, release the clips labelled b to g in figure 5.11 in the order: b and c , d and e , and then f an...

  • Page 152

    152 disassembly and reassembly tm8100/tm8200 service manual © tait electronics limitednovember 2007 8. Remove the elastomeric strips f , speaker clamp h 1 , speaker i , lcd 1@ , keypad 1! , lightpipes j and 1) , and, if fitted, the concealed microphone 1# . Important when replacing the lcd, carefull...

  • Page 153

    Tm8100/tm8200 service manual disassembly and reassembly 153 © tait electronics limitednovember 2007 5.4.3 rj45 control head disassemble only as much as necessary to replace the defective parts. Reassembly is carried out in reverse order of the disassembly. The circled numbers in this section refer t...

  • Page 154

    154 disassembly and reassembly tm8100/tm8200 service manual © tait electronics limitednovember 2007 5.4.4 blank control head disassemble only as much as necessary to replace the defective parts. Reassembly is carried out in reverse order of the disassembly. The circled numbers in this section refer ...

  • Page 155: Servicing Procedures

    Tm8100/tm8200 service manual servicing procedures 155 © tait electronics limitednovember 2007 6 servicing procedures scope of section this section gives the full sequence of tasks required when servicing a particular radio. These tasks are: ■ initial inspection, visual inspection and fault diagnosis...

  • Page 156

    156 servicing procedures tm8100/tm8200 service manual © tait electronics limitednovember 2007 the bung for aperture for external options connector should be replaced by a cover seal if an external options connector is present. All the parts are illustrated in “spare parts” on page 455 . Except for t...

  • Page 157

    Tm8100/tm8200 service manual servicing procedures 157 © tait electronics limitednovember 2007 task 3 — power up the radio with the radio connected to the test equipment as described in “setting up the test equipment” on page 115 , attempt to power up the radio. 1. Apply power to the radio. If the ra...

  • Page 158

    158 servicing procedures tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 4 — read the programming file given that the radio powers up, the next task is to read the radio’s programming file or upload a default file. 1. Use the programming application to read the programming ...

  • Page 159

    Tm8100/tm8200 service manual servicing procedures 159 © tait electronics limitednovember 2007 task 5 — obtain the details of the software feature enabler (sfe) use the programming application to obtain and record the details of any software-enabled features (tools > optional features). For more info...

  • Page 160

    160 servicing procedures tm8100/tm8200 service manual © tait electronics limitednovember 2007 4. If there is a fault in the user interface, repair the radio as described in “fault finding of control head with graphical display” on page 423 or “fault finding of control head with 1-, 2- or 3- digit di...

  • Page 161

    Tm8100/tm8200 service manual servicing procedures 161 © tait electronics limitednovember 2007 task 9 — check the transmit and transmit-audio functions if the radio does not transmit, this can be caused by: ■ the synthesizer not being in lock ■ no or wrong carrier power ■ no modulation. If the cause ...

  • Page 162

    162 servicing procedures tm8100/tm8200 service manual © tait electronics limitednovember 2007 14. If the main-board assembly was replaced or if the repair failed, re- assemble the radio as described in “disassembly and reassembly” on page 135 . Conclude with the tasks of “final tasks” on page 163 . ...

  • Page 163: 6.2

    Tm8100/tm8200 service manual servicing procedures 163 © tait electronics limitednovember 2007 12. If the volume potentiometer is faulty, repair it as described in “volume control faulty” on page 442 (graphical display) or “volume control faulty” on page 454 (1-, 2- or 3-digit display). If it is not ...

  • Page 164

    164 servicing procedures tm8100/tm8200 service manual © tait electronics limitednovember 2007 3. If the main-board assembly has been replaced, level-1 service centres should return the faulty board to the nearest asc, and level-2 service centres should return the board or assembly to the isc, if dee...

  • Page 165

    Tm8100/tm8200 service manual servicing procedures 165 © tait electronics limitednovember 2007 8. On receiving the licence file, run the programming application on the test pc. On the menu bar click tools > optional features. The software feature enabler dialog appears. 9. Use the licence file to ena...

  • Page 166

    166 servicing procedures tm8100/tm8200 service manual © tait electronics limitednovember 2007 table 6.2 final tests of transmitter function test limits error in transmit frequency +100hz to –100hz transmit power (25w radios): • high • medium • low • very low 23.2w to 29.2w 11.1w to 14.0w 4.6w to 5.8...

  • Page 167

    Tm8100/tm8200 service manual servicing procedures 167 © tait electronics limitednovember 2007 table 6.3 final tests of receiver functions test limits receive sensitivity mute opening: • country • city • hard >6db and >8db and >18db and audio power (maximum volume at –47dbm): • at “r x a udio /sinad”...

  • Page 168

    168 servicing procedures tm8100/tm8200 service manual © tait electronics limitednovember 2007.

  • Page 169: Power Supply Fault Finding

    Tm8100/tm8200 service manual power supply fault finding 169 © tait electronics limitednovember 2007 7 power supply fault finding fault-diagnosis tasks fault diagnosis of the power-supply circuitry is divided into the following tasks: ■ task 1 : check inputs to smps ■ task 2 : check 3.3v supply ■ tas...

  • Page 170

    170 power supply fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 1 — check inputs to smps the test equipment and radio should be set up as described in “setting up the test equipment” on page 115 . If not already done, remove the board. Connect the control hea...

  • Page 171

    Tm8100/tm8200 service manual power supply fault finding 171 © tait electronics limitednovember 2007 figure 7.1 important components of the power-supply circuitry (bottom side), including 3.3v regulator ic602 pin 7 pin 5 c603 c618 r199 d604 q709 d601 c718.

  • Page 172

    172 power supply fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 2 — check 3.3v supply if the inputs at pin 5 and pin 7 of ic602 in the smps circuitry are correct, but the radio fails to power up, then the 3.3v dc supply needs to be investigated. 1. First dete...

  • Page 173

    Tm8100/tm8200 service manual power supply fault finding 173 © tait electronics limitednovember 2007 2. Disconnect the 13.8v supply at the power connector. Remove r199 (see figure 7.1 ). Reconnect the 13.8v supply. 3. With the probe of the multimeter on the 3 v 3 test point, press the on / off key. I...

  • Page 174

    174 power supply fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 3 — check linear regulators this task describes the general procedure for checking any linear regulator. There are two possible faults: either the regulator has failed and prevents the radio from...

  • Page 175

    Tm8100/tm8200 service manual power supply fault finding 175 © tait electronics limitednovember 2007 task 4 — check power-up configuration the radio may be configured for one or more of the following power-up options: ■ battery power sense ■ auxiliary power sense ■ emergency power sense ■ internal-op...

  • Page 176

    176 power supply fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 5 — check power-up options the functioning of the power-up options may be checked as described in step 1 to step 4 below. Carry out the procedure in the appropriate step or steps. In all four cas...

  • Page 177

    Tm8100/tm8200 service manual power supply fault finding 177 © tait electronics limitednovember 2007 4. For the internal-options power-sense option the link lk4 should be inserted (see figure 7.2 ). Connect +3.3v dc (more than 2.6v to be precise) from the power supply to the iop gpio 7 line (pin 15 o...

  • Page 178

    178 power supply fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 6 — check provision of external power external power is supplied to pin 8 of the auxiliary connector sk101. The power is normally switched, but will be unswitched if all the links lk5 to lk8 are ...

  • Page 179: Interface Fault Finding

    Tm8100/tm8200 service manual interface fault finding 179 © tait electronics limitednovember 2007 8 interface fault finding introduction this section covers the diagnosis of faults involving signals output from or input to the radio’s internal circuitry via the control-head, internal options, power, ...

  • Page 180

    180 interface fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 8.2 components of the interface circuitry (top side near the cdc top and if top cans) figure 8.3 components of the interface circuitry (top side at the corner) cdc top can if top can.

  • Page 181

    Tm8100/tm8200 service manual interface fault finding 181 © tait electronics limitednovember 2007 task 1 — check output lines for an output line suspected or reported to be faulty, compare actual and expected signals as described below. If necessary, determine what an expected signal should be by cop...

  • Page 182

    182 interface fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 8.4 components of the interface circuitry (bottom side).

  • Page 183

    Tm8100/tm8200 service manual interface fault finding 183 © tait electronics limitednovember 2007 task 2 — check input lines for an input line suspected or reported to be faulty, proceed as follows: 1. For a suspect ch on off line, go to step 4 . For all other input lines go to step 2 . 2. For the su...

  • Page 184

    184 interface fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007.

  • Page 185

    Tm8100/tm8200 service manual frequency synthesizer fault finding 185 © tait electronics limitednovember 2007 9 frequency synthesizer fault finding introduction this section covers the diagnosis of faults in the frequency synthesizer. The sections are divided into the following: ■ initial checks ■ fa...

  • Page 186: 9.1

    186 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 9.1 initial checks types of checks there are two different types of initial checks, which are covered in the following tasks: ■ task 1 : calibration checks ■ task 2 : lock status. Which, if a...

  • Page 187

    Tm8100/tm8200 service manual frequency synthesizer fault finding 187 © tait electronics limitednovember 2007 transmit and receive faults a transmit or receive fault will be implied by one of the following consequences: ■ radio fails to receive or receive performance is degraded ■ radio fails to ente...

  • Page 188

    188 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 6. Enter the cctm command 205 to reset the calibration values to the default values. Then enter the cctm command 302 0 10 again to calibrate the transmit vco. 7. If the calibration succeeded,...

  • Page 189: 9.2

    Tm8100/tm8200 service manual frequency synthesizer fault finding 189 © tait electronics limitednovember 2007 7. If the lock status is 110, the second lo is out of lock. Go to “receiver fault finding” on page 247 . 8. If the lock status is 111, this implies normal operation. But if the lock error per...

  • Page 190

    190 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 9.2 synthesizer circuitry under the syn top can and the 6v regulator ic606 (top side) vhf bands uhf bands measurement point on l506 (pin not used) pin 5 (5-pin device) q508 q507 q506 q...

  • Page 191

    Tm8100/tm8200 service manual frequency synthesizer fault finding 191 © tait electronics limitednovember 2007 task 3 — 14v power supply (b1 50w and k5: 15.5v) first check the output vcl supply from the smps, which is itself provided with a 9v dc supply from a 9v regulator in the psu module. 1. Remove...

  • Page 192

    192 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 note on a4 band radios, these components are not located under the fcl top can (see figure 9.3 ). Remove the syn bot can and check ic504 and ic505 for shorts (see figure 9.4 ); replace any su...

  • Page 193

    Tm8100/tm8200 service manual frequency synthesizer fault finding 193 © tait electronics limitednovember 2007 figure 9.3 synthesizer circuitry under the fcl top can (top side) a4 band pad top can (top side pcb) vcxo bot can (bottom side pcb).

  • Page 194

    194 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 9.4 synthesizer circuitry under the syn bot can (bottom side) ic505 ic504 q505 q511.

  • Page 195

    Tm8100/tm8200 service manual frequency synthesizer fault finding 195 © tait electronics limitednovember 2007 task 5 — 5v power supply if the smps output and 6v dc supply are correct, check the +5 v dec supply next. 1. Remove the syn top can. 2. Measure the supply +5 v dec at pin 4 of q508 (see figur...

  • Page 196

    196 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 9.5 transmit-receive switch components — vhf bands (25w versions shown) q5003 q5002 q5003 q5002 syn top a4 band.

  • Page 197

    Tm8100/tm8200 service manual frequency synthesizer fault finding 197 © tait electronics limitednovember 2007 task 6 — 3v power supply if the smps output and the 6v and 5v supplies are correct, the remaining power supply to check is the 3v dc supply. 1. Measure the supply +3 v 0 an at pins 7 and 15 o...

  • Page 198: 9.3

    198 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 9.3 phase-locked loop introduction if there is no fault with the power supplies, check the critical output from, and inputs to, the pll: ■ task 7 : supply for charge pump ■ task 8 : reference...

  • Page 199

    Tm8100/tm8200 service manual frequency synthesizer fault finding 199 © tait electronics limitednovember 2007 figure 9.6 test and measurement points for the synthesizer pll and loop filter feedback vol t age pin 6 of ic505 feedback vol t age pin 6 of ic505 pin 16 of ic503 pin 16 of ic503 p in5o f ic5...

  • Page 200

    200 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 8 — reference frequency if the supply for the charge pump is correct, check the reference frequency input from the fcl to the pll. 1. Measure the reference frequency at pin 8 of ic503 (s...

  • Page 201

    Tm8100/tm8200 service manual frequency synthesizer fault finding 201 © tait electronics limitednovember 2007 task 9 — dig syn en line if the supply for the charge pump and the reference frequency are correct, check the dig syn en line input. 1. Check the dig syn en line at pin 10 of ic503 (see figur...

  • Page 202

    202 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 10 — syn lock line if all the critical inputs to the pll are correct, check the syn lock line output. 1. Enter the cctm command 72 to determine the lock status in receive mode. Note the ...

  • Page 203

    Tm8100/tm8200 service manual frequency synthesizer fault finding 203 © tait electronics limitednovember 2007 figure 9.8 synthesizer circuitry under the syn top can (top side) vhf bands uhf bands q512 q512 junction of c541 and r547 junction of c541 and r547 tp503 tp503 k5 band q512 junction of c541 a...

  • Page 204: 9.4

    204 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 9.4 loop filter introduction if the power supplies for the frequency synthesizer are correct, and the pll is functioning properly, check the loop filter next: ■ task 11 : check loop voltage ■...

  • Page 205

    Tm8100/tm8200 service manual frequency synthesizer fault finding 205 © tait electronics limitednovember 2007 task 12 — vco faulty if the loop voltage is correct, the loop filter is functioning properly. The vco and related circuitry is therefore suspect. The section to proceed to depends on the type...

  • Page 206

    206 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 14 — check feedback voltage if the loop filter is suspect but the reference voltage is correct, check the feedback voltage. 1. Measure the feedback voltage at pin 6 of ic505 (see figure ...

  • Page 207

    Tm8100/tm8200 service manual frequency synthesizer fault finding 207 © tait electronics limitednovember 2007 task 15 — check dig syn fast line if the loop filter is suspect but the reference and feedback voltages are correct, check the dig syn fast line, which is input to the inverter. 1. Enter the ...

  • Page 208

    208 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 16 — check tp 503 test point if the reference voltage, feedback voltage, and dig syn fast line are all correct, check the voltage at the tp 503 test point. 1. Measure the voltage at the ...

  • Page 209: 9.5

    Tm8100/tm8200 service manual frequency synthesizer fault finding 209 © tait electronics limitednovember 2007 9.5 receive vco and related circuitry (uhf radios) introduction if there is no fault with the power supplies, the pll inputs and output, and the loop filter, check the vco and related circuit...

  • Page 210

    210 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 9.10 measurement points for the vco and related circuitry in uhf radios (except k5 band).

  • Page 211

    Tm8100/tm8200 service manual frequency synthesizer fault finding 211 © tait electronics limitednovember 2007 task 17 — check receive vco check that the correct receive frequency is synthesized. This is the frequency of the receive vco output syn rx lo 1 at the rx port shown in figure 9.11 . 1. Enter...

  • Page 212

    212 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 9.11 synthesizer circuitry under the syn top and vco top cans (uhf radio, top side) tx port junction of c541 and r547 rx port q507 q506 q508 uhf band shown, vhf similar tx port junctio...

  • Page 213

    Tm8100/tm8200 service manual frequency synthesizer fault finding 213 © tait electronics limitednovember 2007 task 18 — repair pll feedback if both the minimum and maximum receive frequencies are correct, the pll feedback is suspect. 1. Resolder r542 in position (see figure 9.11 ). 2. Remove the vco ...

  • Page 214

    214 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 9.12 synthesizer circuitry under the vco bot (bottom side) q5001 uhf band shown, vhf similar k5 band.

  • Page 215

    Tm8100/tm8200 service manual frequency synthesizer fault finding 215 © tait electronics limitednovember 2007 task 20 — check switching to receive mode if no receive frequency is detected in the check of the receive vco, first check that the transmit-receive switch is functioning correctly. 1. Resold...

  • Page 216

    216 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 21 — repair switching network if the transmit-receive switch is not functioning correctly, first check the dig syn tr sw line to confirm that the digital board is not the cause. If the d...

  • Page 217

    Tm8100/tm8200 service manual frequency synthesizer fault finding 217 © tait electronics limitednovember 2007 task 22 — check receive buffer amplifier (not for the k5 band) if no receive frequency is detected but the switching network is not faulty, check the receive buffer amplifier. If the amplifie...

  • Page 218: 9.6

    218 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 9.6 transmit vco and related circuitry (uhf and 800mhz radios) introduction if there is no fault with the power supplies, the pll inputs and output, and the loop filter, check the vco and rel...

  • Page 219

    Tm8100/tm8200 service manual frequency synthesizer fault finding 219 © tait electronics limitednovember 2007 task 23 — check transmit vco check that the correct transmit frequency is synthesized. This is the frequency of the transmit vco output syn tx lo at the tx port shown in figure 9.11 . 1. Ente...

  • Page 220

    220 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 24 — repair pll feedback if both the minimum and maximum transmit frequencies are correct, the pll feedback is suspect. 1. Resolder r542 in position (see figure 9.11 ). 2. Remove the vco...

  • Page 221

    Tm8100/tm8200 service manual frequency synthesizer fault finding 221 © tait electronics limitednovember 2007 task 26 — check switching to transmit mode if no transmit frequency is detected in the check of the transmit vco, first check that the transmit-receive switch is functioning correctly. 1. Res...

  • Page 222

    222 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 27 — check transmit buffer amplifier if no transmit frequency is detected but the switching network is not faulty, check the transmit buffer amplifier. If the amplifier is not faulty, th...

  • Page 223

    Tm8100/tm8200 service manual frequency synthesizer fault finding 223 © tait electronics limitednovember 2007 6. If the voltages are correct, go to step 7 . If they are not, check the transmit buffer circuitry based on ic506 (see figure 9.11 ). If this repairs the fault, conclude with step 14 . 7. Re...

  • Page 224: 9.7

    224 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 9.7 vco and related circuitry (vhf radios) introduction if there is no fault with the power supplies, the pll inputs and output, and the loop filter, check the vco and related circuitry. The ...

  • Page 225

    Tm8100/tm8200 service manual frequency synthesizer fault finding 225 © tait electronics limitednovember 2007 figure 9.13 measurement points for the vco and related circuitry in vhf radios +5v dec p in1o f d5004 pin 1 of d5004 p in3o f q5003 pin 3 of q5003 p in2o f q5001 pin 2 of q5001 p in2o f d5004...

  • Page 226

    226 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 28 — check vco check that the correct receive and transmit frequencies are synthesized. The receive frequency is that of the vco output syn rx lo 1 at the rx port shown in figure 9.14 . ...

  • Page 227

    Tm8100/tm8200 service manual frequency synthesizer fault finding 227 © tait electronics limitednovember 2007 figure 9.14 synthesizer circuitry under the syn top can (vhf radios, top side) tx port junction of c541 and r547 rx port.

  • Page 228

    228 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 29 — repair pll feedback if both the maximum and minimum vco frequencies are correct, then the pll feedback is suspect. 1. Resolder r542 in position (see figure 9.14 ). 2. Remove the vco...

  • Page 229

    Tm8100/tm8200 service manual frequency synthesizer fault finding 229 © tait electronics limitednovember 2007 figure 9.15 synthesizer circuitry under the vco bot can (vhf radios) q5003 q5002 l510 q5001 d5004 q5000 q5003 l5010 syn top a4 band q5002 d5004 q5001 q5000

  • Page 230

    230 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 30 — repair vco if either or both the maximum and minimum frequencies are incorrect, the vco circuitry is faulty. 1. Remove the vco bot can. 2. Check the vco. The circuitry is based on q...

  • Page 231

    Tm8100/tm8200 service manual frequency synthesizer fault finding 231 © tait electronics limitednovember 2007 task 31 — check transmit- receive switch if no frequency is detected in the check of the vco, first check that the transmit-receive switch is functioning correctly. 1. Resolder r542 in positi...

  • Page 232

    232 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 32 — repair switching network if the transmit-receive switch is not functioning correctly, first check the dig syn tr sw line to confirm that the digital board is not the cause. If the d...

  • Page 233

    Tm8100/tm8200 service manual frequency synthesizer fault finding 233 © tait electronics limitednovember 2007 task 33 — check buffer amplifier if no vco frequency is detected but the switching network is not faulty, check the buffer amplifier. If the amplifier is not faulty, there might be a fault in...

  • Page 234: 9.8

    234 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 9.8 power supply for fcl fault-diagnosis stages indications of a fault in the fcl will have been revealed by the initial checks in “initial checks” on page 186 and the pll checks in “phase-lo...

  • Page 235

    Tm8100/tm8200 service manual frequency synthesizer fault finding 235 © tait electronics limitednovember 2007 figure 9.16 test and measurement points the fcl circuitry rf analog clock digit al signal types psu lpf mixer vcxo tcxo modula t or b uffer amplifier a gnd digit al bo ard cdc vcxo mod syn cd...

  • Page 236

    236 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 34 — power supply if the fcl is suspect, first check that the 3v power supply is not the cause of the fault. 1. If not already done, remove the board from the chassis and place the radio...

  • Page 237: 9.9

    Tm8100/tm8200 service manual frequency synthesizer fault finding 237 © tait electronics limitednovember 2007 9.9 vcxo and tcxo outputs task 35 — vcxo output if the 3v power supply is not faulty, check the vcxo output as follows: 1. Use an oscilloscope probe to check the vcxo output at the following ...

  • Page 238: L501

    238 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 9.18 fcl circuitry under and adjacent the fcl top can via for measuring vcxo output position r527 for tasks 38 and 39 fc l _to p ic506 l501 q504 ic509 r520 r510 r527 r5044 a4 band via ...

  • Page 239

    Tm8100/tm8200 service manual frequency synthesizer fault finding 239 © tait electronics limitednovember 2007 task 36 — tcxo output if the vcxo output is correct, check the tcxo output as follows: 1. Use the oscilloscope probe to check the tcxo output at the tp 504 test point (see figure 9.18 ). The ...

  • Page 240: 9.10

    240 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 9.10 signals at tp501 and tp502 introduction if the vcxo and tcxo outputs are correct, the next stage is to check the signals at the tp 501 and tp 502 test points. The procedure is divided in...

  • Page 241

    Tm8100/tm8200 service manual frequency synthesizer fault finding 241 © tait electronics limitednovember 2007 also, the vcxo input to the mixer (see figure 9.18 ), although noisy and difficult to measure, should be: 6. Confirm the removal of the fault and go to task 38 . If the repair failed, replace...

  • Page 242

    242 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 39 — tp502 test point (tp501 grounded) if the loop was oscillating, task 38 will have revealed any fault in the vcxo circuitry. If there was no fault, or if the circuit was repaired, a c...

  • Page 243

    Tm8100/tm8200 service manual frequency synthesizer fault finding 243 © tait electronics limitednovember 2007 6. Resolder r527 in its original position as shown in figure 9.18 . 7. Replace all cans. 8. Use the oscilloscope probe to check the difference frequency at the tp 502 test point (see figure 9...

  • Page 244: 9.11

    244 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 9.11 vcxo and codec circuitry introduction if the signals at the tp 501 and tp 502 test points are correct, two cctm checks will reveal any remaining faults. These possible faults concern the...

  • Page 245

    Tm8100/tm8200 service manual frequency synthesizer fault finding 245 © tait electronics limitednovember 2007 4. Replace all cans. 5. Repeat task 40 to confirm the removal of the fault. If the repair failed, replace the board and go to “final tasks” on page 163 . Task 42 — codec 2 circuitry if the cc...

  • Page 246

    246 frequency synthesizer fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007.

  • Page 247: Receiver Fault Finding

    Tm8100/tm8200 service manual receiver fault finding 247 © tait electronics limitednovember 2007 10 receiver fault finding fault conditions this section covers the diagnosis of faults in the receiver. The fault-diagnosis procedures consist of 18 tasks grouped into the following sections. The symptoms...

  • Page 248: 10.1

    248 receiver fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 10.1 faulty receiver sensitivity introduction this section covers the determination of the extent of the receiver’s loss of sensitivity. Depending on the nature of the fault, a reduction in receiver sensi...

  • Page 249

    Tm8100/tm8200 service manual receiver fault finding 249 © tait electronics limitednovember 2007 figure 10.1 receiver circuitry under the if top can (top side) q404 uhf measurement point vhf q404 measurement point ic400

  • Page 250: 10.2

    250 receiver fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 10.2 excessive loss of sensitivity introduction this section covers the case where the receiver has suffered an excessive loss of sensitivity. As measured in task 1 , the receiver gain will be less than 1...

  • Page 251

    Tm8100/tm8200 service manual receiver fault finding 251 © tait electronics limitednovember 2007 figure 10.2 receiver circuitry under the lo 2 bot can (uhf shown) figure 10.3 receiver circuitry under the fe top can (top side) (all bands except k5) measurement point q401.

  • Page 252

    252 receiver fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 3 — check logic signal if there is no fault with the power supplies, check the logic signal dig rx en that is input from the digital board. 1. Check the logic signal dig rx en at pin 8 of ic403 (see ...

  • Page 253

    Tm8100/tm8200 service manual receiver fault finding 253 © tait electronics limitednovember 2007 task 4 — check lock status if the logic signal from the digital board is active, as required, check the lock status of the radio. 1. Enter the cctm command 72 to determine the lock status. The status shou...

  • Page 254

    254 receiver fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 6 — check matching circuitry having excluded the if amplifier, check the matching circuitry for the crystal filters. 1. Check all remaining components between t401 and ic400 — these form the matching...

  • Page 255: 10.3

    Tm8100/tm8200 service manual receiver fault finding 255 © tait electronics limitednovember 2007 10.3 moderate or slight loss of sensitivity introduction this section covers the case where the receiver has suffered a moderate or slight loss of sensitivity. As measured in task 1, the receiver gain wil...

  • Page 256

    256 receiver fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 8 — moderately low sensitivity for all bands except k5, following the initial investigation in task 7 , check the circuitry as follows when the sensitivity loss is moderate. For the k5 band, these st...

  • Page 257

    Tm8100/tm8200 service manual receiver fault finding 257 © tait electronics limitednovember 2007 k5 band only: for the k band, check the circuitry as follows when the sensitivity loss is moderate. For all other bands, the steps begin on page 256 . 1. Remove the fe top can and, if not already done, th...

  • Page 258

    258 receiver fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 6. Check the signal level at the output of lo1 and continue the fault diagnosis as in “power supply for fcl” on page 234 . 7. Confirm the removal of the fault and go to “final tasks” on page 163 on page 1...

  • Page 259: 10.4

    Tm8100/tm8200 service manual receiver fault finding 259 © tait electronics limitednovember 2007 10.4 incorrect rssi readings introduction if the rssi readings are incorrect, the receiver calibration is suspect. There are four tasks, which cover the four types of settings concerned: ■ task 10 : agc v...

  • Page 260

    260 receiver fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 table 10.4 nominal agc data parameter agc voltage (mv) a4 band: rf2667 rf9667 agc0 agc1 agc2 1810 ± 40 1985 ± 40 2135 ± 50 1710 ± 40 1845 ± 40 1965 ± 50 b1 band: rf2667 rf9667 agc0 agc1 agc2 1790 ± 40 196...

  • Page 261

    Tm8100/tm8200 service manual receiver fault finding 261 © tait electronics limitednovember 2007 task 11 — fe tune bpf settings if the agc voltage calibration is correct, check the fe tune bpf settings. 1. Note the settings listed in the “fe tune bpf settings” field. The nominal settings should be as...

  • Page 262: 10.5

    262 receiver fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 10.5 faulty radio mute introduction if the radio mute is faulty, the calibration settings are suspect. There are three tasks: ■ task 14 : determine type of muting selected ■ task 15 : noise muting selecte...

  • Page 263

    Tm8100/tm8200 service manual receiver fault finding 263 © tait electronics limitednovember 2007 task 15 — noise muting selected with noise muting selected, check the noise mute settings: 1. In the calibration application open the “deviation/squelch” page and click the “squelch and signaling threshol...

  • Page 264

    264 receiver fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 16 — rssi muting selected with rssi muting selected, check the rssi mute settings. 1. In the calibration application open the “deviation/squelch” page and click the “squelch and signaling thresholds”...

  • Page 265: 10.6

    Tm8100/tm8200 service manual receiver fault finding 265 © tait electronics limitednovember 2007 10.6 high receiver distortion introduction if there is high receiver distortion, the tcxo is suspect, or alternatively, the matching circuitry for the crystal filters xf400 and xf401. There are two tasks:...

  • Page 266

    266 receiver fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 18 — second if and repair of matching circuitry if the tcxo is not faulty, check the second if and, if necessary, repair the matching circuitry. 1. Input a large unmodulated rf input signal exceeding...

  • Page 267

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 267 © tait electronics limitednovember 2007 11 transmitter fault finding (>25w) introduction this section covers the diagnosis of faults in the 40w/50w and 30w/35w transmitter circuitry. The main indication of a fault in the transmitter i...

  • Page 268

    268 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 frequency bands where test procedures or figures differ according to the frequency band of the radio, the frequency band is given in brackets. The frequency band may be referred to as either ‘vh...

  • Page 269

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 269 © tait electronics limitednovember 2007 emergency frequencies the following frequency ranges are reserved worldwide for use as maritime emergency frequencies or by distress beacons: ■ b1 band: 156.8mhz ± 375khz ■ h5 band: 406.0 to 406...

  • Page 270

    270 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 ensure proper antenna load the radio has been designed to operate with a 50 Ω termination impedance, but will tolerate a wide range of antenna loading conditions. Nevertheless, care should be ex...

  • Page 271: 11.1

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 271 © tait electronics limitednovember 2007 11.1 power supplies introduction first check that a power supply is not the cause of the fault. There are two power supplies and a switch circuit for the transmitter: ■ task 1 : 13.8v dc supply ...

  • Page 272

    272 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 1 — 13.8v power supply first check the power supply from the power connector. 1. Obtain a needle probe to use for measurements of the power supply at the pa driver and pas. If none is avail...

  • Page 273: L310

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 273 © tait electronics limitednovember 2007 figure 11.2 point for measuring the power supply to the pas and pa driver (vhf) l310 q310 q309 q306 r339 q308 r350 measurement point on l310 point 2 on r 350 measurement point on r339 point 1 on...

  • Page 274: Q310

    274 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 11.3 point for measuring the power supply to the pas and pa driver (uhf and k5 bands) q310 q309 q306 r339 q308 l310 measurement point on l310 point 1 on r350 measurement point on r339 r35...

  • Page 275

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 275 © tait electronics limitednovember 2007 task 2 — check switch circuit if the power supply to the drains of the pas and pa driver is not correct, the switch circuit is suspect.Check the circuit as follows: 1. Measure the voltage at the...

  • Page 276

    276 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 3 — 9v power supply if the supply from the power connector is correct, check the 9v dc supply. 1. Enter the cctm command 326 1 to set the transmitter power level very low. 2. Enter the cctm...

  • Page 277

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 277 © tait electronics limitednovember 2007 figure 11.4 test points for checking the 9v supply, the forward and reverse rf power, and the inhibiting of the transmitter vhf uhf if t op can vco to p can if t op can dirc t op can dirc t op c...

  • Page 278: 11.2

    278 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 11.2 transmitter rf power introduction if there is no fault with the power supplies, check the transmitter rf power and correct any fault. The procedure is covered in the following eight tasks: ...

  • Page 279

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 279 © tait electronics limitednovember 2007 figure 11.5 measurement and test points for diagnosing faults concerning the transmitter rf power rev pwr test point rev pwr test point fwd pwr test point fwd pwr test point lead t o test set le...

  • Page 280

    280 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 4 — check forward and reverse powers first check the forward and reverse powers for an indication of which part of the circuitry is suspect. 1. Enter the cctm command 326 4 to set the trans...

  • Page 281

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 281 © tait electronics limitednovember 2007 task 5 — check rf output power if the power supplies are correct, check the rf output power of the transmitter. 1. Enter the cctm command 326 5 to set the transmitter power level to the maximum ...

  • Page 282

    282 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 6 — power unchanged regardless of setting if all the power and current values measured in task 5 are correct, it is likely that the power remains unchanged regardless of the power setting. ...

  • Page 283

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 283 © tait electronics limitednovember 2007 task 7 — check for inhibiting of transmitter if the transmitter is drawing no current or the wrong current, check whether it is being inhibited. This check is also required if a co3 error occurs...

  • Page 284

    284 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 8 — check temperature sensor if the transmitter is being inhibited and the logic signal at the d tx inh test point is active, a fault in the temperature sensor may be the cause. 1. Enter th...

  • Page 285

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 285 © tait electronics limitednovember 2007 figure 11.6 pa circuitry under the paf top can and part of the directional coupler under the dirc top can (vhf and uhf bands) h5, h7 bands c348 c349 c350 d301 q310 q309 test pad mounting point f...

  • Page 286

    286 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 11.7 pa circuitry under the paf top can and part of the directional coupler under the dirc top can (k5 band) temperature sensor mounting point for test capacitor test pad.

  • Page 287

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 287 © tait electronics limitednovember 2007 task 9 — power and current are skewed if the rf output power and the supply current are skewed, the output matching is suspect. 1. Remove the dirc top can. 2. Remove the coupling capacitors c348...

  • Page 288

    288 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 10 — repair output matching circuitry if the checks in task 9 show that the power and current are still skewed, there is a fault in the output matching circuitry. 1. If not already done, re...

  • Page 289

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 289 © tait electronics limitednovember 2007 task 11 — power and current are low if the rf output power and the supply current are uniformly low at all frequencies, one of the pas is suspect or the input to the pas is reduced. Check each p...

  • Page 290: 11.3

    290 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 11.3 biasing of pa driver and pas introduction the measurements of the transmitter rf output power in “transmitter rf power” may indicate a need to check the biasing of the two pas and the pa dr...

  • Page 291

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 291 © tait electronics limitednovember 2007 figure 11.8 measurement and test points for diagnosing faults in the biasing of the pas and pa driver pin switch and lpf rev pwr fwd pwr r336 r347 direc- tional coupler pa s b uffer amplifier b ...

  • Page 292

    292 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 13 — check biasing of first pa check the biasing of the first pa (q310). Important ensure that the current limit on the dc supply is 3a. And, when entering the cctm command 331 x, do not sp...

  • Page 293

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 293 © tait electronics limitednovember 2007 figure 11.9 test points and components of the shaping filter (vhf) r340 r334 r347 r342 c324 c322 r336 r333 ic303 ic301 b1 band dirc top can drv test point rev pwr test point fwd pwr test point p...

  • Page 294

    294 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 11.10 test points and components of the shaping filter (uhf and k5 bands) ic301 r334 ic303 r333 r336 r347 r342 c324 c322 h5, h7 bands dirc top can fwd pwr test point rev pwr test point if...

  • Page 295

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 295 © tait electronics limitednovember 2007 task 14 — shaper and level shifter if the voltage measured in task 13 is correct but not the current, either the first pa or the shaper and level shifter for the pa is suspect. Important ensure ...

  • Page 296

    296 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 11.11 pa circuitry under the paf top can (vhf and uhf) h5, h7 bands q310 q309 circuitry between ic301 and pas via to gate of q310 via to gate of q309 via to pin 14 of ic301 via to pin 8 o...

  • Page 297

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 297 © tait electronics limitednovember 2007 figure 11.12 pa circuitry under the paf top can (k5 band) via to gate of q309 via to gate of q310 via to pin 14 of ic301 via to pin 8 of ic301 circuitry between ic301 and pas.

  • Page 298

    298 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 15 — shaping filter for power control if neither the voltage nor the current measured in task 13 is correct, then the shaping filter for the power-control circuitry or the codec and audio c...

  • Page 299

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 299 © tait electronics limitednovember 2007 task 16 — check biasing of second pa if the biasing of the first pa is correct, check that of the second pa (q309). Important ensure that the current limit on the dc supply is 3a. And, when ente...

  • Page 300

    300 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 17 — shaper and level shifter if the voltage measured in task 16 is correct but not the current, either the second pa or the shaper and level shifter for the pa is suspect. Important ensure...

  • Page 301

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 301 © tait electronics limitednovember 2007 task 18 — shaping filter for power control if neither the voltage nor the current measured in task 16 is correct, then the shaping filter for the power-control circuitry or the codec and audio c...

  • Page 302

    302 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 19 — biasing of pa driver — drv test point if there is no fault in the biasing of the pas, investigate the biasing of the pa driver (q306). First check the drv test point. Important ensure ...

  • Page 303

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 303 © tait electronics limitednovember 2007 task 20 — biasing of pa driver— set pwr test point if the voltage at the drv test point is correct, check that at the set pwr test point. 1. Check the voltage at the set pwr test point (see figu...

  • Page 304

    304 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 11.13 pa driver circuitry under the pad top can (vhf) pad top q3504 b1 band r327 c310 r324 q306 components c310, r324 and r327 gate of q306.

  • Page 305

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 305 © tait electronics limitednovember 2007 figure 11.14 pa driver circuitry under the pad top can (uhf).

  • Page 306

    306 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 11.15 pa driver circuitry under the pad top can (k5 band) gate of q306 components c310, r324 and r327.

  • Page 307

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 307 © tait electronics limitednovember 2007 task 21 — check power control check the power-control circuitry if the clamp current for the pa driver is correct or if the voltage at the set pwr test point is incorrect. Important ensure that ...

  • Page 308

    308 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 22 — directional coupler and buffer amplifiers following the checks in task 19 to task 21 , locate the fault and repair the circuitry as described in the remaining tasks of the section. In ...

  • Page 309

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 309 © tait electronics limitednovember 2007 switch or lpf or both are suspect; go to task 33 . If there is a fault, go to step 11 . 10. In the buffer amplifiers, check r340 (see figure 11.9 for vhf, figure 11.17 for uhf, and figure 11.19 ...

  • Page 310

    310 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 23 — power control for pa driver in this task any faults in the path between the power-control circuit and the pa driver will be located, as well as any fault with the pa driver. 1. Check f...

  • Page 311

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 311 © tait electronics limitednovember 2007 figure 11.18 components of concern on the bottom-side of the main board (uhf) h5, h7 bands c319 r341 r340 r396 copper plate vco bot can.

  • Page 312

    312 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 11.19 components of concern on the bottom-side of the main board (k5 band) copper plate vco bot can.

  • Page 313

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 313 © tait electronics limitednovember 2007 task 24 — power control in this task any faults in the power-control circuitry will be located: 1. Measure the voltage at pin 8 of ic303 (see figure 11.9 and figure 11.10 ) in the power-control ...

  • Page 314

    314 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 25 — shaping filter in this task any faults in the shaping-filter circuitry will be located. 1. With the radio still in transmit mode, measure the voltage at pin 1 of ic301 (see figure 11.9...

  • Page 315: 11.4

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 315 © tait electronics limitednovember 2007 11.4 rf signal path introduction the rf signal path extends from the output of the frequency synthesizer to the lpf. This section of circuitry will require investigation either following certain...

  • Page 316

    316 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 26 — output of frequency synthesizer the first point to check in the initial rf signal path is the output syn tx lo from the frequency synthesizer. This signal is input to the exciter at c3...

  • Page 317

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 317 © tait electronics limitednovember 2007 figure 11.21 pa driver circuitry under the pad top can (uhf and vhf) pad top q3504 c317 c389 q306 c3500 c3505 c3509 c307 q3501 q3502 q3505 h5, h7 bands output of pa driver output of stage 3 of e...

  • Page 318

    318 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 11.22 pa driver circuitry under the pad top can (k5 band) output of stage 2 of exciter at c307 output of stage 2 of exciter at c313 synthesizer output at c300 output of pa driver.

  • Page 319

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 319 © tait electronics limitednovember 2007 table 11.8 rf voltages along the initial rf signal path of the vhf radio (b1 band) power level (w) frequency (mhz) rf voltages (v) synthesizer output exciter stage 1 exciter stage 2 exciter stag...

  • Page 320

    320 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 table 11.10 rf voltages along the initial rf signal path of the uhf radio (h5 band) power level (w) frequency (mhz) rf voltages (v) synthesizer output exciter stage 1 exciter stage 2 exciter sta...

  • Page 321

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 321 © tait electronics limitednovember 2007 table 11.12 rf voltages along the initial rf signal path of the radio (k5 band) power level (w) frequency (mhz) rf voltages (v) synthesizer output exciter stage 1 exciter stage 2 driver output 1...

  • Page 322

    322 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 27 — output of first stage of exciter if the synthesizer output is correct, check the output at c3505 for the vhf/uhf bands or c313 for the k5 band of the first stage of the exciter circuit...

  • Page 323

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 323 © tait electronics limitednovember 2007 task 28 — output of second stage of exciter if the output of the first stage of the exciter circuit is correct, check that of the second stage at c3509 for the vhf/uhf bands or l307 for the k5 b...

  • Page 324

    324 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 29 — output of third stage of exciter (vhf/uhf bands only) if the output of the second stage of the exciter circuit is correct, check that of the third and final stage at c307. 1. With the ...

  • Page 325

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 325 © tait electronics limitednovember 2007 task 30 — output of pa driver if the exciter output is correct, check the output of the pa driver at the drain of q306. If necessary, also check the signal at the gates of the pas q309 and q310....

  • Page 326

    326 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 11.23 components of the interstage matching circuitry between the pa driver q306 and the pas q309 and q310 (vhf) b1 band q310 q309 q306 paf top can pad top can.

  • Page 327

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 327 © tait electronics limitednovember 2007 figure 11.24 components of the interstage matching circuitry between the pa driver q306 and the pas q309 and q310 (uhf) h5, h7 bands q310 q309 q306 paf top can pad top can.

  • Page 328

    328 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 11.25 components of the interstage matching circuitry between the pa driver q306 and the pas q309 and q310 (k5 band) paf top can pad top can.

  • Page 329

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 329 © tait electronics limitednovember 2007 task 31 — check power at directional coupler if, as determined in task 26 to task 30 , there is no fault in the initial rf signal path, investigate the final signal path. This part of the circui...

  • Page 330

    330 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 11.26 circuitry under the dirc top can, and the points for attaching the test lead and test capacitor k5 band te st pad mo unting point for te st c apa citor uhf te st pa d mo unting poin...

  • Page 331

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 331 © tait electronics limitednovember 2007 task 32 — repair circuitry if the rf output power measured in task 31 is low, there is a fault in the circuit between the common drain of the pas and the test capacitor. 1. If not already done, ...

  • Page 332

    332 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 33 — check pin switch in checking the final rf signal path, if no fault is found in the directional coupler, then check the pin switch next. The pin switch may also require investigation fo...

  • Page 333

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 333 © tait electronics limitednovember 2007 figure 11.27 circuitry under the pin top can, and points for attaching the test lead and test capacitor k 5 band test pad m ounting poi nt for test capacit or uhf tes t pad mounting point fo r t...

  • Page 334

    334 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 34 — repair pin switch if the rf power at the pin switch is low, the switch is not drawing the expected current or the diode is faulty. Check the circuit as follows: 1. Remove the pin top c...

  • Page 335

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 335 © tait electronics limitednovember 2007 figure 11.28 components of concern on the bottom-side of the main board (vhf) b1 band r389 r390 nb bot can copper plate vco bot can.

  • Page 336

    336 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 11.29 components of concern on the bottom-side of the main board (uhf) h5, h7 bands r3000 r389 r390 copper plate vco bot can.

  • Page 337

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 337 © tait electronics limitednovember 2007 figure 11.30 components of concern on the bottom-side of the main board (k5 band) vco bot can copper plate.

  • Page 338

    338 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 11.31 circuitry under the lpf top can k 5 band uhf vhf.

  • Page 339

    Tm8100/tm8200 service manual transmitter fault finding (>25w) 339 © tait electronics limitednovember 2007 task 35 — check components of lpf if there are no faults in the final rf signal path up to and including the pin switch, then the fault should lie in the lpf. Check the lpf as follows: 1. If not...

  • Page 340

    340 transmitter fault finding (>25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007.

  • Page 341

    Tm8100/tm8200 service manual transmitter fault finding (25w) 341 © tait electronics limitednovember 2007 12 transmitter fault finding (25w) introduction this section covers the diagnosis of faults in the 25w transmitter circuitry. The main indication of a fault in the transmitter is a reduction in r...

  • Page 342

    342 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 frequency bands where test procedures or figures differ according to the frequency band of the radio, the frequency band is given in brackets. The frequency band may be referred to as either ‘vhf...

  • Page 343

    Tm8100/tm8200 service manual transmitter fault finding (25w) 343 © tait electronics limitednovember 2007 transmit tests the following points need to be borne in mind when carrying out transmit tests: ■ secure board ■ ensure proper antenna load ■ limit duration of transmit tests ■ protect against acc...

  • Page 344: 12.1

    344 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 12.1 power supplies introduction first check that a power supply is not the cause of the fault. There are two power supplies and a switch circuit for the transmitter: ■ task 1 : 13.8v dc supply f...

  • Page 345

    Tm8100/tm8200 service manual transmitter fault finding (25w) 345 © tait electronics limitednovember 2007 task 1 — 13.8v power supply first check the power supply from the power connector. 1. Obtain a needle probe to use for measurements of the power supply at the pa driver and pas. If none is availa...

  • Page 346

    346 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 12.2 point for measuring the power supply to the pas (uhf shown) h5/h6 bands shown measurement point on l310

  • Page 347: Q306

    Tm8100/tm8200 service manual transmitter fault finding (25w) 347 © tait electronics limitednovember 2007 figure 12.3 point for measuring the power supply to the pa driver (vhf shown) c310 r324 r327 c317 c389 q306 q308 r350 l306 pad top measurement point on l306 measurement point on r339 d1 band r339...

  • Page 348

    348 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 2 — check switch circuit if the power supply to the drains of the pas and pa driver is not correct, the switch circuit is suspect. Check the circuit as follows: 1. Measure the voltage at the...

  • Page 349

    Tm8100/tm8200 service manual transmitter fault finding (25w) 349 © tait electronics limitednovember 2007 figure 12.4 test points for checking the 9v supply, the forward and reverse rf power, and the inhibiting of the transmitter dirc top can if top can vco top can (uhf only) d tx inh test point tx i...

  • Page 350: 12.2

    350 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 12.2 transmitter rf power introduction if there is no fault with the power supplies, check the transmitter rf power and correct any fault. The procedure is covered in the following eight tasks: ■...

  • Page 351

    Tm8100/tm8200 service manual transmitter fault finding (25w) 351 © tait electronics limitednovember 2007 figure 12.5 measurement and test points for diagnosing faults concerning the transmitter rf power rev pwr test point rev pwr test point fwd pwr test point fwd pwr test point lead t o test set lea...

  • Page 352

    352 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 4 — check forward and reverse powers first check the forward and reverse powers for an indication of which part of the circuitry is suspect. 1. Enter the cctm command 326 4 to set the transm...

  • Page 353

    Tm8100/tm8200 service manual transmitter fault finding (25w) 353 © tait electronics limitednovember 2007 task 5 — check rf output power if the power supplies are correct, check the rf output power of the transmitter. 1. Enter the cctm command 326 5 to set the transmitter power level to the maximum v...

  • Page 354

    354 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 6 — power unchanged regardless of setting if all the power and current values measured in task 5 are correct, it is likely that the power remains unchanged regardless of the power setting. 1...

  • Page 355

    Tm8100/tm8200 service manual transmitter fault finding (25w) 355 © tait electronics limitednovember 2007 12. Repair any fault, confirm the removal of the fault, and go to “final tasks” on page 163 . If the repair failed or no fault could be found, replace the board and go to “final tasks” on page 16...

  • Page 356

    356 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 12.6 pa circuitry under the paf top can and part of the directional coupler under the dirc top can (vhf shown) paf top d301 q310 q309 d1 band temperature sensor c350 c349 c348 mounting poi...

  • Page 357

    Tm8100/tm8200 service manual transmitter fault finding (25w) 357 © tait electronics limitednovember 2007 task 9 — power and current are skewed if the rf output power and the supply current are skewed, the output matching is suspect. 1. Remove the dirc top can. 2. Remove the coupling capacitors c348,...

  • Page 358

    358 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 10 — repair output matching circuitry if the checks in task 9 show that the power and current are still skewed, there is a fault in the output matching circuitry. 1. If not already done, rem...

  • Page 359

    Tm8100/tm8200 service manual transmitter fault finding (25w) 359 © tait electronics limitednovember 2007 task 11 — power and current are low if the rf output power and the supply current are uniformly low at all frequencies, one of the pas is suspect or the input to the pas is reduced. Check each pa...

  • Page 360: 12.3

    360 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 12.3 biasing of pa driver and pas introduction the measurements of the transmitter rf output power in “transmitter rf power” might indicate a need to check the biasing of the two pas and the pa d...

  • Page 361

    Tm8100/tm8200 service manual transmitter fault finding (25w) 361 © tait electronics limitednovember 2007 figure 12.7 measurement and test points for diagnosing faults in the biasing of the pas and pa driver pin switch and lpf r336 r347 direc- tional coupler pa s buffer amplifier buffer amplifier pow...

  • Page 362

    362 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 13 — check biasing of first pa check the biasing of the first pa (q310). Important ensure that the current limit on the dc supply is 2a. And, when entering the cctm command 331 x, do not spe...

  • Page 363

    Tm8100/tm8200 service manual transmitter fault finding (25w) 363 © tait electronics limitednovember 2007 figure 12.8 test points and components of the shaping filter dirc top can if top can vco top can (uhf only) set pwr test point fwd pwr test point pwr test point fin1 test point fin2 test point dr...

  • Page 364: Paf Top

    364 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 12.9 pa circuitry under the paf top can (vhf shown) d301 paf top circuitry between ic301 and pas via to gate of q309 via to gate of q310 q310 q309 d1 band via to pin 14 of 1c301 via to pin...

  • Page 365

    Tm8100/tm8200 service manual transmitter fault finding (25w) 365 © tait electronics limitednovember 2007 task 14 — shaper and level shifter if the voltage measured in task 13 is correct but not the current, either the first pa or the shaper and level shifter for the pa is suspect. Important ensure t...

  • Page 366

    366 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 15 — shaping filter for power control if neither the voltage nor the current measured in task 13 is correct, then the shaping filter for the power-control circuitry or the codec and audio ci...

  • Page 367

    Tm8100/tm8200 service manual transmitter fault finding (25w) 367 © tait electronics limitednovember 2007 task 16 — check biasing of second pa if the biasing of the first pa is correct, check that of the second pa (q309). Important ensure that the current limit on the dc supply is 2a. And, when enter...

  • Page 368

    368 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 17 — shaper and level shifter if the voltage measured in task 16 is correct but not the current, either the second pa or the shaper and level shifter for the pa is suspect. Important ensure ...

  • Page 369

    Tm8100/tm8200 service manual transmitter fault finding (25w) 369 © tait electronics limitednovember 2007 task 18 — shaping filter for power control if neither the voltage nor the current measured in task 16 is correct, then the shaping filter for the power-control circuitry or the codec and audio ci...

  • Page 370

    370 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 19 — biasing of pa driver— drv test point if there is no fault in the biasing of the pas, investigate the biasing of the pa driver (q306). First check the drv test point. Important ensure th...

  • Page 371

    Tm8100/tm8200 service manual transmitter fault finding (25w) 371 © tait electronics limitednovember 2007 task 20 — biasing of pa driver— set pwr test point if the voltage at the drv test point is correct, check that at the set pwr test point. 1. Check the voltage at the set pwr test point (see figur...

  • Page 372

    372 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 12.10 pa driver circuitry under the pad top can (vhf shown) r308 r324 c310 r327 c301 q303 c313 q300 c300 c317 c389 q306 pad top d1 band components c310, r324, r327 gate of q306.

  • Page 373

    Tm8100/tm8200 service manual transmitter fault finding (25w) 373 © tait electronics limitednovember 2007 task 21 — check power control check the power-control circuitry if the clamp current for the pa driver is correct or if the voltage at the set pwr test point is incorrect. Important ensure that t...

  • Page 374

    374 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 12.11 circuitry under the dirc top can (uhf shown).

  • Page 375

    Tm8100/tm8200 service manual transmitter fault finding (25w) 375 © tait electronics limitednovember 2007 task 22 — directional coupler and buffer amplifier following the checks in task 19 to task 21 , locate the fault and repair the circuitry as described in the remaining tasks of the section. In th...

  • Page 376

    376 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 9. Remove the dirc top can. 10. Check the components of the directional coupler (see figure 12.11 ) and go to step 12 . 11. Check r340 between pins 6 and 7 of ic303 in the buffer amplifier (see f...

  • Page 377

    Tm8100/tm8200 service manual transmitter fault finding (25w) 377 © tait electronics limitednovember 2007 figure 12.12 components of concern on the bottom-side of the board (vhf shown) r390 r389 r3000 c319 r340 c345 r396 r3009 copper plate vco bot can.

  • Page 378

    378 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 24 — power control and shaping filter in this task any faults in the power-control and shaping-filter circuitry will be located: 1. Measure the voltage at pin 8 of ic303 (see figure 12.8 ) i...

  • Page 379: 12.4

    Tm8100/tm8200 service manual transmitter fault finding (25w) 379 © tait electronics limitednovember 2007 12.4 rf signal path introduction the rf signal path extends from the output of the frequency synthesizer to the lpf. This section of circuitry will require investigation either following certain ...

  • Page 380

    380 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 25 — output of frequency synthesizer the first point to check in the initial rf signal path is the output syn tx lo from the frequency synthesizer. This signal is input to the exciter at c30...

  • Page 381

    Tm8100/tm8200 service manual transmitter fault finding (25w) 381 © tait electronics limitednovember 2007 figure 12.14 pa driver circuitry under the pad top can (uhf shown) synthesizer output at c300 exciter output at c301 driver output buffer output at c313.

  • Page 382

    382 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 table 12.8 rf voltages along the initial rf signal path of the vhf radio (a4 band) power level (w) frequency (mhz) rf voltages (v) synthesizer output buffer output exciter output driver output 1 ...

  • Page 383

    Tm8100/tm8200 service manual transmitter fault finding (25w) 383 © tait electronics limitednovember 2007 table 12.9 rf voltages along the initial rf signal path of the vhf radio (b1 band) power level (w) frequency (mhz) rf voltages (v) synthesizer output buffer output exciter output driver output 1 ...

  • Page 384

    384 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 table 12.11 rf voltages along the initial rf signal path of the vhf radio (d1 band) power level (w) frequency (mhz) rf voltages (v) synthesizer output buffer output exciter output driver output 1...

  • Page 385

    Tm8100/tm8200 service manual transmitter fault finding (25w) 385 © tait electronics limitednovember 2007 task 26 — output of buffer in exciter circuit if the synthesizer output is correct, check the output at c313 of the buffer amplifier in the exciter circuit. 1. If not already done, remove the pad...

  • Page 386

    386 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 28 — output of pa driver if the exciter output is correct, check the output of the pa driver at the drain of q306. If necessary, also check the signal at the gates of the pas q309 and q310. ...

  • Page 387

    Tm8100/tm8200 service manual transmitter fault finding (25w) 387 © tait electronics limitednovember 2007 figure 12.15 components of the interstage matching circuitry between the pa driver q306 and the pas q309 and q310 (uhf shown) paf top can pad top can.

  • Page 388

    388 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 29 — check power at directional coupler if, as determined in task 25 to task 28 , there is no fault in the initial rf signal path, investigate the final signal path. This part of the circuit...

  • Page 389

    Tm8100/tm8200 service manual transmitter fault finding (25w) 389 © tait electronics limitednovember 2007 figure 12.16 circuitry under the dirc top can, and the points for attaching the test lead and test capacitor (uhf shown) mounting point for test capacitor solder outer sheath to gnd.

  • Page 390

    390 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 30 — repair circuitry if the rf output power measured in task 29 is low, there is a fault in the circuit between the common drain of the pas and the test capacitor. 1. If not already done, r...

  • Page 391

    Tm8100/tm8200 service manual transmitter fault finding (25w) 391 © tait electronics limitednovember 2007 task 31 — check pin switch in checking the final rf signal path, if no fault is found in the directional coupler, then check the pin switch next. The pin switch may also require investigation fol...

  • Page 392

    392 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 12.17 circuitry under the pin top can, and points for attaching the test lead and test capacitor (uhf shown) mounting point for test capacitor solder outer sheath to gnd.

  • Page 393

    Tm8100/tm8200 service manual transmitter fault finding (25w) 393 © tait electronics limitednovember 2007 task 32 — repair pin switch if the rf power at the pin switch is low, the switch is not drawing the expected current or the diode is faulty. Check the circuit as follows: 1. Perform a diode check...

  • Page 394

    394 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 12.18 components of concern on the bottom-side of the board (c0, d1 bands) r390 r389 r3000 c319 r340 c345 r396 r3009 copper plate vco bot can.

  • Page 395

    Tm8100/tm8200 service manual transmitter fault finding (25w) 395 © tait electronics limitednovember 2007 figure 12.19 components of concern on the bottom-side of the board (a4, b1, h5/h6 bands) b1 band copper plate vco bot can nb bot can copper plate vco bot can h5, h6 bands a4 band.

  • Page 396

    396 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 12.20 circuitry under the lpf top can (top side) vhf uhf.

  • Page 397

    Tm8100/tm8200 service manual transmitter fault finding (25w) 397 © tait electronics limitednovember 2007 task 33 — check components of lpf if there are no faults in the final rf signal path up to and including the pin switch, then the fault should lie in the lpf. Check the lpf as follows: 1. Remove ...

  • Page 398

    398 transmitter fault finding (25w) tm8100/tm8200 service manual © tait electronics limitednovember 2007.

  • Page 399

    Tm8100/tm8200 service manual codec and audio fault finding 399 © tait electronics limitednovember 2007 13 codec and audio fault finding fault conditions this section covers the diagnosis of faults in the codec and audio circuitry. There are five conditions that indicate a possible fault in the circu...

  • Page 400: 13.1

    400 codec and audio fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 13.1 power supplies introduction first check that a power supply is not the cause of the fault. Of these supplies, the 3.3v dc supply (+3 v 3) will already have been checked in “power supply fault ...

  • Page 401

    Tm8100/tm8200 service manual codec and audio fault finding 401 © tait electronics limitednovember 2007 task 3 — 2.5v power supply if the 9v and 3v supplies are correct, the remaining power supply to check is the 2.5v dc supply (+2 v 5 cdc ). 1. Measure the voltage +2 v 5 cdc at pin 5 of ic604 (see f...

  • Page 402: 13.2

    402 codec and audio fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 13.2 faulty speaker audio introduction this section covers the case where the green status led is operating correctly and all unmute criteria are satisfied, but there is either no speaker audio or ...

  • Page 403

    Tm8100/tm8200 service manual codec and audio fault finding 403 © tait electronics limitednovember 2007 task 4 — check audio power amplifier if there is no fault with the power supplies, check the inputs to the audio pa as follows. This check is only applicable, however, if the output of the voice- b...

  • Page 404

    404 codec and audio fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 5 — check speaker outputs if the inputs to the audio pa are not faulty, check the speaker outputs from the pa. 1. Check the positive and negative speaker outputs aud itf spk + and aud itf spk ...

  • Page 405

    Tm8100/tm8200 service manual codec and audio fault finding 405 © tait electronics limitednovember 2007 figure 13.3 circuitry under the cdc top can, and adjacent interface circuitry junction of r234 and r235 jun ction of r708 and c706.

  • Page 406

    406 codec and audio fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 6 — check itf vol wip dc input signal if the output of the voice-band codec is correct, but the signal level does not vary as the volume control is varied, check the itf vol wip dc signal. 1. ...

  • Page 407

    Tm8100/tm8200 service manual codec and audio fault finding 407 © tait electronics limitednovember 2007 figure 13.4 circuitry under the cdc bot can lo2 bot can can for digital board junction of r218 and ic204 cdc aud tap out.

  • Page 408

    408 codec and audio fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 7 — check itf rx beep in input signal if the output of the voice-band codec is not correct, check the itf rx beep in signal. 1. If not already done, remove the cdc bot can. 2. Check the signal...

  • Page 409: 13.3

    Tm8100/tm8200 service manual codec and audio fault finding 409 © tait electronics limitednovember 2007 13.3 no speaker audio at auxiliary connector introduction this section covers the case where the receiver operates normally but there is no speaker audio at the auxiliary connector. In other words,...

  • Page 410

    410 codec and audio fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 8 — check signal from codec first generate an appropriate audio test signal and check whether the signal is present at the output of the codec circuitry. 1. Enter the cctm command 400 x, where...

  • Page 411

    Tm8100/tm8200 service manual codec and audio fault finding 411 © tait electronics limitednovember 2007 figure 13.6 circuitry in the vicinity of the auxiliary connector (bottom side) auxiliary connector sk101.

  • Page 412

    412 codec and audio fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 9 — check lpf and buffer amplifier if there is no test signal at the internal-options connector, then either codec 1 is faulty or there is a fault in the lpf or buffer amplifier. 1. Remove the...

  • Page 413

    Tm8100/tm8200 service manual codec and audio fault finding 413 © tait electronics limitednovember 2007 figure 13.7 circuitry under the cdc bot can lo2 bot can can for digital board junction of r224 and ic204.

  • Page 414: 13.4

    414 codec and audio fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 13.4 faulty receiver introduction this section covers the case where the receiver does not operate, although there is no apparent fault in the receiver circuit itself. There are two tasks: ■ task 1...

  • Page 415

    Tm8100/tm8200 service manual codec and audio fault finding 415 © tait electronics limitednovember 2007 task 11 — check qn test point if the level shifter is not faulty, check the signal at the qn test point. This will ascertain whether the digital board, codec 1, or the receiver is at fault. 1. Use ...

  • Page 416: 13.5

    416 codec and audio fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 13.5 faulty modulation introduction this section covers the case where the radio transmits the correct amount of rf power, but there is either no modulation or the modulation is distorted. There ar...

  • Page 417

    Tm8100/tm8200 service manual codec and audio fault finding 417 © tait electronics limitednovember 2007 figure 13.9 circuitry in under the cdc bot can lo2 bot can can for digital board.

  • Page 418

    418 codec and audio fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 task 13 — check 2.3v supply if the ch mic aud signal is not as expected, the 2.3v supply needs to be checked. 1. If not already done, remove the cdc bot can. 2. Check the voltage across c202 (see f...

  • Page 419

    Tm8100/tm8200 service manual codec and audio fault finding 419 © tait electronics limitednovember 2007 figure 13.10 circuitry under the cdc top can itf aud tap in junction of r237 and r241 junction of r229 and r232.

  • Page 420: 13.6

    420 codec and audio fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007 13.6 faulty modulation using auxiliary connector introduction this section covers the case where the transmitter operates normally but there is no modulation (although there is modulation at the au...

  • Page 421

    Tm8100/tm8200 service manual codec and audio fault finding 421 © tait electronics limitednovember 2007 task 16 — check codec 2 device if the dc offset measured in task 15 is incorrect but there is no fault with the auxiliary connector, check the codec 2 device. 1. Remove the cdc top can. 2. Check th...

  • Page 422

    422 codec and audio fault finding tm8100/tm8200 service manual © tait electronics limitednovember 2007.

  • Page 423: Graphical Display

    Tm8100/tm8200 service manual fault finding of control head with graphical display 423 © tait electronics limitednovember 2007 14 fault finding of control head with graphical display overview this section describes the fault finding of the control head with graphical display for the following faults:...

  • Page 424: 14.1

    424 fault finding of control head with graphical display tm8100/tm8200 service manual © tait electronics limitednovember 2007 14.1 cctm commands the following cctm commands are used during the fault finding of the control head: table 14.1 cctm commands for fault finding of the control head cctm comm...

  • Page 425

    Tm8100/tm8200 service manual fault finding of control head with graphical display 425 © tait electronics limitednovember 2007 the following cctm commands are used during the fault finding of the remote control-head kit: table 14.2 cctm commands for fault finding of the remote control-head kit cctm c...

  • Page 426: 14.2

    426 fault finding of control head with graphical display tm8100/tm8200 service manual © tait electronics limitednovember 2007 14.2 power supply faulty a 3.3v regulator (u1) converts the switched 13.8v supply from the radio body to 3.3v. A 1.5v regulator (u203) converts the 3.3v to 1.5v. A power-sens...

  • Page 427

    Tm8100/tm8200 service manual fault finding of control head with graphical display 427 © tait electronics limitednovember 2007 if the signal is not correct, check the 13.8v supply voltage from the radio body. Return to step 1 . 3. Check the inhibit signal at pin 3 of u1. If the signal is above 2.2v, ...

  • Page 428: 14.3

    428 fault finding of control head with graphical display tm8100/tm8200 service manual © tait electronics limitednovember 2007 14.3 lcd display faulty the lcd module is connected to the control-head board via the lcd connector. The lcd module display is controlled by a serial data link to the fpga. A...

  • Page 429

    Tm8100/tm8200 service manual fault finding of control head with graphical display 429 © tait electronics limitednovember 2007 2. Check the 3.3v supply voltage at pin 2 of the lcd connector j102. If the signal is not correct, refer to “power supply faulty” on page 426 . Tip for a quick check of the l...

  • Page 430: 14.4

    430 fault finding of control head with graphical display tm8100/tm8200 service manual © tait electronics limitednovember 2007 14.4 lcd backlighting faulty the backlighting incorporated in the lcd module is controlled by a data line from the fpga, which switches a transistor on mosfet q102. Note the ...

  • Page 431: 14.5

    Tm8100/tm8200 service manual fault finding of control head with graphical display 431 © tait electronics limitednovember 2007 14.5 lcd heating faulty the heating incorporated in the lcd module is controlled by a data line from the fpga, which switches a transistor on mosfet q102. A temperature signa...

  • Page 432: 14.6

    432 fault finding of control head with graphical display tm8100/tm8200 service manual © tait electronics limitednovember 2007 14.6 function key leds or status leds faulty the function key leds ( f1 and f4 ) and the red, green and amber status leds each are controlled by an fpga signal and a transist...

  • Page 433

    Tm8100/tm8200 service manual fault finding of control head with graphical display 433 © tait electronics limitednovember 2007 3. Check the resistors r601 and r602, and replace if necessary. If the resistors are okay, the fpga is faulty and the control-head board must be replaced. R601: 2.2k Ω r602: ...

  • Page 434: 14.7

    434 fault finding of control head with graphical display tm8100/tm8200 service manual © tait electronics limitednovember 2007 14.7 keypad backlighting faulty the keypad backlighting leds are controlled by two fpga signals and two transistors (q2), resulting in four intensity levels (off, low, medium...

  • Page 435

    Tm8100/tm8200 service manual fault finding of control head with graphical display 435 © tait electronics limitednovember 2007 2. With the intensity set to high, check the signals at pins 2 (b1) and 5 (b2) of q2. If any of these signals are incorrect, the fpga is faulty and the con- trol-head board m...

  • Page 436: 14.8

    436 fault finding of control head with graphical display tm8100/tm8200 service manual © tait electronics limitednovember 2007 14.8 on/off key faulty when battery power (13.8v) is applied to the radio, a press of the on / off key will create an active low signal ( ch on off ) back to the radio body t...

  • Page 437

    Tm8100/tm8200 service manual fault finding of control head with graphical display 437 © tait electronics limitednovember 2007 figure 14.10 pcb layout of the power on/off key circuitry top side bottom side.

  • Page 438: 14.9

    438 fault finding of control head with graphical display tm8100/tm8200 service manual © tait electronics limitednovember 2007 14.9 function, scroll, or selection keys faulty the eight keys of the main keypad (function, scroll, and selection keys) are connected to the fpga by an array of three column...

  • Page 439

    Tm8100/tm8200 service manual fault finding of control head with graphical display 439 © tait electronics limitednovember 2007 several keys faulty the keys can be grouped into columns and rows of three or two keys, as illustrated in figure 14.11 . If one column of keys is faulty: 1. Visually inspect ...

  • Page 440: 14.10 Speaker Faulty

    440 fault finding of control head with graphical display tm8100/tm8200 service manual © tait electronics limitednovember 2007 14.10 speaker faulty the two speaker lines (spk+ and spk–) are connected to the speaker connector (j104) which is connected to the control-head connector (j103) through two f...

  • Page 441

    Tm8100/tm8200 service manual fault finding of control head with graphical display 441 © tait electronics limitednovember 2007 figure 14.14 pcb layout of the speaker circuitry top side bottom side.

  • Page 442: 14.11 Volume Control Faulty

    442 fault finding of control head with graphical display tm8100/tm8200 service manual © tait electronics limitednovember 2007 14.11 volume control faulty the voltage level of the volume control potentiometer is converted to a digital signal by an analog/digital converter, processed by the fpga and t...

  • Page 443

    Tm8100/tm8200 service manual fault finding of control head with graphical display 443 © tait electronics limitednovember 2007 figure 14.16 pcb layout of the volume control circuitry top side bottom side.

  • Page 444: 14.12 Ptt Faulty

    444 fault finding of control head with graphical display tm8100/tm8200 service manual © tait electronics limitednovember 2007 14.12 ptt faulty the ptt signal from the microphone connector is connected to the fpga via a resistor (r25) and relayed to the radio as a digital command. Note this section o...

  • Page 445

    Tm8100/tm8200 service manual fault finding of control head with graphical display 445 © tait electronics limitednovember 2007 figure 14.18 pcb layout of ptt circuitry top side bottom side.

  • Page 446

    446 fault finding of control head with graphical display tm8100/tm8200 service manual © tait electronics limitednovember 2007.

  • Page 447

    Tm8100/tm8200 service manual fault finding of control head with 1-, 2- or 3-digit display 447 © tait electronics limitednovember 2007 15 fault finding of control head with 1-, 2- or 3-digit display overview this section describes the fault finding of the control head with 1-, 2- or 3- digit display ...

  • Page 448

    448 fault finding of control head with 1-, 2- or 3-digit display tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 15.1 top side of the control-head board (2-digit control head shown) pads f or lc d pad s for lc d pad s for k eys.

  • Page 449

    Tm8100/tm8200 service manual fault finding of control head with 1-, 2- or 3-digit display 449 © tait electronics limitednovember 2007 figure 15.2 bottom side of the control-head board (2-digit control head shown) pins o f r v 1.

  • Page 450: 15.1

    450 fault finding of control head with 1-, 2- or 3-digit display tm8100/tm8200 service manual © tait electronics limitednovember 2007 15.1 display faulty but not leds elastomeric strips faulty if all the leds function correctly but the display functions only partially or not at all, first check the ...

  • Page 451: 15.2

    Tm8100/tm8200 service manual fault finding of control head with 1-, 2- or 3-digit display 451 © tait electronics limitednovember 2007 control-head board faulty if neither the elastomeric strips nor the lcd are faulty, check the relevant components on the control-head board: 1. Use an oscilloscope to...

  • Page 452: 15.3

    452 fault finding of control head with 1-, 2- or 3-digit display tm8100/tm8200 service manual © tait electronics limitednovember 2007 15.3 all leds faulty if the display functions correctly but all the leds are faulty: 1. Disconnect the control-head loom. 2. Replace ic3 which drives the switching tr...

  • Page 453: 15.5

    Tm8100/tm8200 service manual fault finding of control head with 1-, 2- or 3-digit display 453 © tait electronics limitednovember 2007 15.5 some but not all keys faulty if one or more (but not all) of the keys are faulty, repair the control head as follows: 1. Disconnect the control-head loom and rem...

  • Page 454: 15.7

    454 fault finding of control head with 1-, 2- or 3-digit display tm8100/tm8200 service manual © tait electronics limitednovember 2007 15.7 speaker faulty if the speaker functions only intermittently or the audio level is low: 1. Replace the speaker. 2. Check the continuity from the speaker connector...

  • Page 455: Spare Parts

    Tm8100/tm8200 service manual spare parts 455 © tait electronics limitednovember 2007 16 spare parts this section lists all serviceable parts (except pcb components) of the ■ radio body ( figure 16.1 , figure 16.2 , and table 16.1 ) ■ control head with graphical display ( figure 16.3 and table 16.2 )...

  • Page 456

    456 spare parts tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 16.2 spare parts of the radio body (sheet 2 of 2) g 1$ 2) x3 3641z_01 1# x2 1( 1% 2@ 1^ 2! X2 1& 1*.

  • Page 457

    Tm8100/tm8200 service manual spare parts 457 © tait electronics limitednovember 2007 table 16.1 spare parts of the radio body pos. Description qty. Ipn spares kit b cover 1 – tmaa22-02 mech. Kit c screw m4 x 16 6 349-02067-xx tmaa22-02 mech. Kit d lid 1 312-01091-xx – e bung for aperture for externa...

  • Page 458

    458 spare parts tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 16.3 spare parts of the control head with graphical display c e f g g 1) h i j 1! 1^ 1@ 1# 1$ 1& x2 x4 d b 1%.

  • Page 459

    Tm8100/tm8200 service manual spare parts 459 © tait electronics limitednovember 2007 table 16.2 spare parts of the control head with graphical display pos. Description qty. Ipn spares kit a b m4 x 12 taptite screw 2 349-02058-xx tmaa22-08 c adaptor flange 1 349-02067-xx 301-00020-xx tmaa22-08 d cont...

  • Page 460

    460 spare parts tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 16.4 spare parts of the control heads with 1, - 2- or 3-digit display x3 b c e f x2 1# i j 1) 1@ h g 1! 1$ 1% d.

  • Page 461

    Tm8100/tm8200 service manual spare parts 461 © tait electronics limitednovember 2007 table 16.3 spare parts of the control heads with 1- or 2-digit display pos. Description qty. Ipn spares kit a b control-head loom (with female/female adaptor) – female-female adaptor 1 219-02882-xx 210-00021-41 tmaa...

  • Page 462

    462 spare parts tm8100/tm8200 service manual © tait electronics limitednovember 2007 table 16.4 spare parts for the 3-digit display pos. Description qty. Ipn b control-head loom (with female/female adaptor) – female-female adaptor 1 219-02882-xx 210-00021-41 c control-head options board (optional) –...

  • Page 463

    Tm8100/tm8200 service manual spare parts 463 © tait electronics limitednovember 2007 figure 16.5 spare parts of the rj45 control head table 16.5 spare parts of the rj45 control head pos. Description qty. Ipn b control-head board 1 xmac30 c control-head loom (with female/female adaptor) – female-fema...

  • Page 464

    464 spare parts tm8100/tm8200 service manual © tait electronics limitednovember 2007.

  • Page 465: Part C – Accessories

    Tm8100/tm8200 service manual 465 © tait electronics limitednovember 2007 part c – accessories 17 tmaa01-01 line-interface board . . . . . . . . . . . . . . . . . . . . . . . . . . .469 17.1 operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 469 17.2...

  • Page 466

    466 tm8100/tm8200 service manual © tait electronics limitednovember 2007 22 tmaa02-07 concealed microphone . . . . . . . . . . . . . . . . . . . . . . . . .519 22.1 installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 519 22.2 radio programming . . ....

  • Page 467

    Tm8100/tm8200 service manual 467 © tait electronics limitednovember 2007 29.5 pcb information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 576 30 tmaa04-05 ignition sense kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .579 30.1 hardware configuration f...

  • Page 468

    468 tm8100/tm8200 service manual © tait electronics limitednovember 2007 36.3 adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 608 36.4 radio programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 608 36.5 interface ...

  • Page 469: 17.1

    Tm8100/tm8200 service manual tmaa01-01 line-interface board 469 © tait electronics limited november 2007 17 tmaa01-01 line-interface board note these instructions refer to line-interface pcb issue 220-65202-02 or later. On earlier issue pcbs, sk1 pin 5 is ground. The tmaa01-01 line-interface board p...

  • Page 470

    470 tmaa01-01 line-interface board tm8100/tm8200 service manual © tait electronics limited november 2007 17.2.1 adjustment points on the line-interface board the following table describes the line-interface adjustment points. Adjustments are made by setting the dip switches on s1 to either “on” or “...

  • Page 471

    Tm8100/tm8200 service manual tmaa01-01 line-interface board 471 © tait electronics limited november 2007 : 17.2.3 configuration procedure the line-interface board configuration must be completed before the board is installed in the radio, as the top side of the line-interface board is not accessible...

  • Page 472

    472 tmaa01-01 line-interface board tm8100/tm8200 service manual © tait electronics limited november 2007 2. Set the dip switches on the line-interface board (s1) to the following default test settings: ■ dip1 on (two-wire audio interface) ■ dip2 off ■ dip3 off ■ dip4 on (busy/gate = rx-gate) ■ dip5 ...

  • Page 473: 17.3

    Tm8100/tm8200 service manual tmaa01-01 line-interface board 473 © tait electronics limited november 2007 setting the line output level (rv2) monitor the line output (sk1 pins 14 and 15) and apply an on-channel signal from the rf signal generator at an output level of -47dbm, modulated to 60% of syst...

  • Page 474

    474 tmaa01-01 line-interface board tm8100/tm8200 service manual © tait electronics limited november 2007 17.3.2 installation procedure 1. Disassemble the radio in order to gain access to the options cavity. For detailed disassembly instructions, refer to “disassembly and reassembly” on page 135 . Th...

  • Page 475

    Tm8100/tm8200 service manual tmaa01-01 line-interface board 475 © tait electronics limited november 2007 figure 17.2 installing the line-interface board b radio lid h screw-lock fasteners c external options connector bung i mounting posts d foam seal j m3x8 self-tapping screws e external options con...

  • Page 476: 17.4

    476 tmaa01-01 line-interface board tm8100/tm8200 service manual © tait electronics limited november 2007 17.4 programming information the lines from the radio’s internal options connector that are used by the line-interface board are iop_gpio1 to iop_gpio4. The behaviour of these lines is configured...

  • Page 477: 17.5

    Tm8100/tm8200 service manual tmaa01-01 line-interface board 477 © tait electronics limited november 2007 17.5 interface specification the following tables summarize the signals used for the line-interface board on the internal options connector (sk2 on the line-interface board) and the external opti...

  • Page 478: 17.6

    478 tmaa01-01 line-interface board tm8100/tm8200 service manual © tait electronics limited november 2007 17.6 line-interface board application the following diagram shows the control of two radios operated together, crossband or repeater linked. Table 17.8 external options connector (sk1) — pins and...

  • Page 479: 17.7

    Tm8100/tm8200 service manual tmaa01-01 line-interface board 479 © tait electronics limited november 2007 17.7 line-interface board specifications input voltage 10.8v to 16vdc operating temperature range -10 °c to +60°c ambient dc input current line input sensitivity (60% deviation) -20dbm to +6dbm (...

  • Page 480

    480 tmaa01-01 line-interface board tm8100/tm8200 service manual © tait electronics limited november 2007 17.7.2 radio with line-interface board: receiver + line input transmitter frequency response* bandwidth response *relative to 1khz, 20% deviation, below limiting 300hz to 3khz +1, -3db relative t...

  • Page 481: 17.8

    Tm8100/tm8200 service manual tmaa01-01 line-interface board 481 © tait electronics limited november 2007 17.8 circuit description 17.8.1 audio interface when the line-interface board is used for repeater applications, the audio passed between the two radios must be of such a level that the message i...

  • Page 482

    482 tmaa01-01 line-interface board tm8100/tm8200 service manual © tait electronics limited november 2007 the comparators (in u1) operate off a single sided regulated 5v supply. U1 pins 2,4 and 5 provide receiver gate delay. Once the busy signal is not active, c4 charges through r12 and causes u4 to ...

  • Page 483: 17.9

    Tm8100/tm8200 service manual tmaa01-01 line-interface board 483 © tait electronics limited november 2007 ref. Ipn description ref. Ipn description 17.9 pcb information 17.9.1 tmaa01-01 parts list (pcb ipn 220-65202-04) c1 014-08100-03 cap tant smd 10u 35v 20% d c2 015-26100-08 cap cer 0805 100n 10% ...

  • Page 484

    484 tmaa01-01 line-interface board tm8100/tm8200 service manual © tait electronics limited november 2007 ref. Pcb circuit ref. Pcb circuit ref. Pcb circuit 17.9.2 tmaa01-01 grid reference list (pcb ipn 220-65202-04) c1 b2 2:a2 c2 b1 2:a2 c3 c5 2:a4 c4 f6 1:d5 c5 d8 2:g3 c7 b6 2:a4 c8 d2 2:f6 c9 d2 2...

  • Page 485

    Tm8100/tm8200 service manual tmaa01-01 line-interface board 485 © tait electronics limited november 2007 17.9.3 line-interface board layout (top side) ipn 220-65202-04.

  • Page 486

    486 tmaa01-01 line-interface board tm8100/tm8200 service manual © tait electronics limited november 2007 17.9.4 line-interface board layout (bottom side) ipn 220-65202-04.

  • Page 487

    Tm8100/tm8200 service manual tmaa01-01 line-interface board 487 © tait electronics limited november 2007 17.9.5 line-interface board circuit diagram.

  • Page 488

    488 tmaa01-01 line-interface board tm8100/tm8200 service manual © tait electronics limited november 2007.

  • Page 489: Tmaa01-02 Rs-232 Board

    Tm8100/tm8200 service manual tmaa01-02 rs-232 board 489 © tait electronics limited november 2007 18 tmaa01-02 rs-232 board the tmaa01-02 rs-232 board fits inside the radio in the options cavity and is connected to the main pcb by the internal options connector and loom. The rs-232 signals are then m...

  • Page 490: 18.2

    490 tmaa01-02 rs-232 board tm8100/tm8200 service manual © tait electronics limited november 2007 18.2 installing the rs-232 board important this equipment contains devices which are susceptible to damage from static charges. Refer to “esd precautions” on page 112 for more information. 18.2.1 parts r...

  • Page 491

    Tm8100/tm8200 service manual tmaa01-02 rs-232 board 491 © tait electronics limited november 2007 important the external options connector screw-lock fasteners must be tightened correctly before screwing the rs-232 board onto the mounting posts i . 7. Screw the external options connector to the radio...

  • Page 492: 18.3

    492 tmaa01-02 rs-232 board tm8100/tm8200 service manual © tait electronics limited november 2007 18.3 interface specification the following tables summarize the signals used for the rs-232 board on the internal options connector (sk1 on the rs-232 board) and the external options connector (sk2 on th...

  • Page 493: 18.4

    Tm8100/tm8200 service manual tmaa01-02 rs-232 board 493 © tait electronics limited november 2007 ref. Ipn description ref. Ipn description 18.4 pcb information 18.4.1 tmaa01-02 parts list (pcb ipn 220-01740-01) c1 014-07100-02 cap tant smd 1u0 16v 20% a c2 018-14100-00 cap 0603 1n 50v x7r ±10% c3 01...

  • Page 494

    494 tmaa01-02 rs-232 board tm8100/tm8200 service manual © tait electronics limited november 2007 18.4.2 rs-232 board layout (top side) ipn 220-01740-01.

  • Page 495

    Tm8100/tm8200 service manual tmaa01-02 rs-232 board 495 © tait electronics limited november 2007 18.4.3 rs-232 board layout (bottom side) ipn 220-01740-01.

  • Page 496

    496 tmaa01-02 rs-232 board tm8100/tm8200 service manual © tait electronics limited november 2007 18.4.4 rs-232 board circuit diagram.

  • Page 497: Tmaa01-05 and Tmaa01-07

    Tm8100/tm8200 service manual tmaa01-05 and tmaa01-07 options extender boards 497 © tait electronics limited november 2007 19 tmaa01-05 and tmaa01-07 options extender boards the tmaa01-05 and tmaa01-07 options extender boards provide external access to most of the signal lines provided by the radio’s...

  • Page 498

    498 tmaa01-05 and tmaa01-07 options extender boards tm8100/tm8200 service manual © tait electronics limited november 2007 19.1.1 power supply line the power supply output available on pin 2 of the external options connector is factory-set to 13.8v. The output on this pin can be changed to 5v if r11 ...

  • Page 499: 19.2

    Tm8100/tm8200 service manual tmaa01-05 and tmaa01-07 options extender boards 499 © tait electronics limited november 2007 19.2 installing the options extender board 19.2.1 parts required the following table describes the parts required to install an options extender board in a radio. The parts marke...

  • Page 500

    500 tmaa01-05 and tmaa01-07 options extender boards tm8100/tm8200 service manual © tait electronics limited november 2007 7. Screw the options extender board to the mounting posts on the radio lid using four m3x8 self-tapping screws j . Tighten the m3x8 screws to a torque of 1.9n·m (17lbf·in) import...

  • Page 501: 19.3

    Tm8100/tm8200 service manual tmaa01-05 and tmaa01-07 options extender boards 501 © tait electronics limited november 2007 19.3 interface specification the following tables summarize the signals used for the options extender board on the internal options connector (sk1 on the options extender board) ...

  • Page 502

    502 tmaa01-05 and tmaa01-07 options extender boards tm8100/tm8200 service manual © tait electronics limited november 2007 table 19.4 external options connector (sk2) — pins and signals pin signal description 2 13v8_sw 1 13v8 supply 6 aud_tap_out b programmable tap point out of the rx or tx audio cha...

  • Page 503: 19.4

    Tm8100/tm8200 service manual tmaa01-05 and tmaa01-07 options extender boards 503 © tait electronics limited november 2007 ref. Ipn description ref. Ipn description c1 018-16100-00 cap 100n 16v ±10% 0603 x7r c2 018-16100-00 cap 100n 16v ±10% 0603 x7r c3 018-16100-00 cap 100n 16v ±10% 0603 x7r c4 018-...

  • Page 504

    Ref. Pcb circuit ref. Pcb circuit ref. Pcb circuit 504 tmaa01-05 and tmaa01-07 options extender boards tm8100/tm8200 service manual © tait electronics limited november 2007 19.4.2 tmaa01-05 grid reference list (pcb ipn 220-65203-05) c1 c5 1j6 c2 d5 1j5 c3 d5 1k6 c4 d5 1j5 c5 d4 1k7 c6 e6 1b6 c7 e8 1...

  • Page 505

    Tm8100/tm8200 service manual tmaa01-05 and tmaa01-07 options extender boards 505 © tait electronics limited november 2007 19.4.3 options extender board layout (top side) 19.4.4 options extender board layout (bottom side) ipn 220-65203-05 ipn 220-65203-05.

  • Page 506

    506 tmaa01-05 and tmaa01-07 options extender boards tm8100/tm8200 service manual © tait electronics limited november 2007 19.4.5 options extender board circuit diagram spare links +13v8_sw aud_tap_out sk2 agnd to connector plane link options aud_tap_in internal agnd db15 to d19 mra4004t3 gnd_opt_esd...

  • Page 507: Tmaa02-02 Dtmf Microphone

    Tm8100/tm8200 service manual tmaa02-02 dtmf microphone 507 © tait electronics limited november 2007 20 tmaa02-02 dtmf microphone the tmaa02-02 dtmf microphone plugs into the microphone socket on the radio control head, and enables users to make calls to a pabx or pstn. To make a call, enter the requ...

  • Page 508: 20.2

    508 tmaa02-02 dtmf microphone tm8100/tm8200 service manual © tait electronics limited november 2007 installing the microphone clip 1. Install the microphone clip in the most convenient location for the radio user. It must be within easy reach of the user, but in such a position that the microphone p...

  • Page 509: 20.4

    Tm8100/tm8200 service manual tmaa02-02 dtmf microphone 509 © tait electronics limited november 2007 20.4 interface specification the following table and diagram summarizes the signals used for the dtmf microphone on the radio’s microphone connector and shows the interface between the dtmf microphone...

  • Page 510: 20.5

    510 tmaa02-02 dtmf microphone tm8100/tm8200 service manual © tait electronics limited november 2007 20.5 circuit description the microphone has a standard 12-key telephone keypad. When one of the keypad keys is pressed, a dtmf tone specific to that key is generated on the mic_aud line (pin 5). For t...

  • Page 511: And Dynamic Microphones

    Tm8100/tm8200 service manual tmaa02-06 support kit for concealed and dynamic microphones 511 © tait electronics limited november 2007 21 tmaa02-06 support kit for concealed and dynamic microphones the concealed and dynamic microphone support board plugs onto the radio’s control head board and contai...

  • Page 512: 21.2

    512 tmaa02-06 support kit for concealed and dynamic microphones tm8100/tm8200 service manual © tait electronics limited november 2007 important to maintain the ip54 protection class, great care must be taken when installing the microphone capsule and seal d into the concealed-microphone cavity. 3. P...

  • Page 513: 21.3

    Tm8100/tm8200 service manual tmaa02-06 support kit for concealed and dynamic microphones 513 © tait electronics limited november 2007 21.3 interface specification the following table and diagram summarizes the signals used for the concealed and dynamic microphone support kit and shows the interface ...

  • Page 514: 21.4

    514 tmaa02-06 support kit for concealed and dynamic microphones tm8100/tm8200 service manual © tait electronics limited november 2007 ref. Ipn description ref. Ipn description 21.4 pcb information 21.4.1 tmaa02-06 parts list (pcb ipn 220-01712-01) c1 015-26330-08 cap cer 0805 330n 5% 10v x7r c2 015-...

  • Page 515

    Tm8100/tm8200 service manual tmaa02-06 support kit for concealed and dynamic microphones 515 © tait electronics limited november 2007 21.4.2 concealed and dynamic microphone support board (top side) ipn 220-01712-01.

  • Page 516

    516 tmaa02-06 support kit for concealed and dynamic microphones tm8100/tm8200 service manual © tait electronics limited november 2007 21.4.3 concealed and dynamic microphone support board (bottom side) ipn 220-01712-01.

  • Page 517

    Tm8100/tm8200 service manual tmaa02-06 support kit for concealed and dynamic microphones 517 © tait electronics limited november 2007 21.4.4 concealed and dynamic microphone board circuit diagram.

  • Page 518

    518 tmaa02-06 support kit for concealed and dynamic microphones tm8100/tm8200 service manual © tait electronics limited november 2007.

  • Page 519: 22.1

    Tm8100/tm8200 service manual tmaa02-07 concealed microphone 519 © tait electronics limited november 2007 22 tmaa02-07 concealed microphone the tmaa02-07 concealed microphone is installed inside the speaker grille of the graphical-display control head. If the radio is placed in emergency mode, the co...

  • Page 520: 22.2

    520 tmaa02-07 concealed microphone tm8100/tm8200 service manual © tait electronics limited november 2007 installing the microphone capsule 1. Unscrew the two screws holding the adaptor flange to the control head. The adaptor flange can now be separated from the control head. 2. Drill a 1mm diameter ...

  • Page 521: Tmaa02-08 Keypad Microphone

    Tm8100/tm8200 service manual tmaa02-08 keypad microphone 521 © tait electronics limited november 2007 23 tmaa02-08 keypad microphone the tmaa02-08 keypad microphone plugs into the microphone socket on the radio control head, and enables users to make calls to other radios, groups, or to a pabx or ps...

  • Page 522: 23.2

    522 tmaa02-08 keypad microphone tm8100/tm8200 service manual © tait electronics limited november 2007 important the radio will only recognize the presence of the keypad microphone when the radio is powered on, so that if the microphone is plugged in after the radio has been powered on, it will not r...

  • Page 523

    Tm8100/tm8200 service manual tmaa02-08 keypad microphone 523 © tait electronics limited november 2007 ui preferences form select “keypad mic” in the mic field. Start-up form in the keypad mic mode field, select whether the keypad microphone is in “channel control” mode or “dtmf dialling” mode when t...

  • Page 524: 23.3

    524 tmaa02-08 keypad microphone tm8100/tm8200 service manual © tait electronics limited november 2007 23.3 interface specification the following table and diagram summarizes the signals used for the keypad microphone on the radio’s microphone connector and shows the interface between the keypad micr...

  • Page 525: Tmaa03-02 Security Bracket

    Tm8100/tm8200 service manual tmaa03-02 security bracket 525 © tait electronics limited november 2007 24 tmaa03-02 security bracket the tmaa03-02 security bracket can be used in place of the standard u-bracket in locations where you want to stop opportunistic removal of the radio by a third party, or...

  • Page 526: 24.1

    526 tmaa03-02 security bracket tm8100/tm8200 service manual © tait electronics limited november 2007 24.1 installing the security bracket and radio 24.2 installation planning before installing the security bracket, make sure that the site you have chosen for the installation meets the following crit...

  • Page 527: 24.3

    Tm8100/tm8200 service manual tmaa03-02 security bracket 527 © tait electronics limited november 2007 4. If the slide locks are closed, open them by inserting the slide lock key into the keyhole. Rotate the key 90° (it will slip into a detent), and pull. Two slide lock keys are supplied so that you c...

  • Page 528: 24.6

    528 tmaa03-02 security bracket tm8100/tm8200 service manual © tait electronics limited november 2007 24.6 re-ordering extra parts the following parts can be re-ordered separately in case of loss, or in situations where, for example, one security bracket is installed where several different radios ma...

  • Page 529: Installing A Remote Kit

    Tm8100/tm8200 service manual installing a remote kit 529 © tait electronics limitednovember 2007 25 installing a remote kit a tmaa03-16 or tmaa03-25 remote kit can be used to install the control head of a graphical-display radio remotely from the radio body. The diagram below shows the parts used fo...

  • Page 530

    530 installing a remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 25.1.1 overview installing the control head remotely is done in six steps: 1. Remove the control head from the radio body, if necessary. 2. Install the torso interface b onto the radio body. 3. Mount th...

  • Page 531: –

    Tm8100/tm8200 service manual installing a remote kit 531 © tait electronics limitednovember 2007 25.1.3 removing the control head from the radio body (if necessary) caution during this procedure, take care that the control- head seal is not damaged. Damage to this seal reduces environmental protecti...

  • Page 532

    532 installing a remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 25.1.5 mounting the remote u-bracket the remote u-bracket with its self-drilling screws, is used to install the remote control-head assembly on the dashboard or on any sufficiently flat surface. Caution...

  • Page 533

    Tm8100/tm8200 service manual installing a remote kit 533 © tait electronics limitednovember 2007 installing the remote control- head assembly in the remote u-bracket 1. Position the control-head assembly in the remote u-bracket and position it for a good viewing angle. Note adjusting the contrast on...

  • Page 534

    534 installing a remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 25.1.8 connecting the remote cable caution when drilling holes in the vehicle, check that drilling at the selected points will not damage existing wiring, petrol tanks, fuel lines, brake pipes or batter...

  • Page 535: 25.2

    Tm8100/tm8200 service manual installing a remote kit 535 © tait electronics limitednovember 2007 25.2 circuit description figure 25.3 shows a block diagram of the remote control-head installation. The control heads contain circuit boards with rs-485 driver components and an audio amplifier or attenu...

  • Page 536: 25.3

    536 installing a remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 25.3 servicing the remote kit parts 25.3.1 disassembling the torso interface disassemble only as much as is necessary to replace the defective parts. Re-assembly is carried out in reverse order of disas...

  • Page 537

    Tm8100/tm8200 service manual installing a remote kit 537 © tait electronics limitednovember 2007 25.3.2 disassembling the control-head interface disassemble only as much as necessary to replace the defective parts or to swap the micromatch connector loom. Re-assembly is carried out in reverse order ...

  • Page 538: 25.4

    Ref. Ipn description ref. Ipn description 538 installing a remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 c101 015-06470-01 cap cer 1206 470n x7r 20% 50v c102 018-16100-00 cap 0603 100n 16v x7r + - 10% c103 015-07220-08 cap cer 1206 2u2 16v x7r c104 015-07220-08 cap...

  • Page 539

    Tm8100/tm8200 service manual installing a remote kit 539 © tait electronics limited november 2007 ref. Pcb circuit ref. Pcb circuit ref. Pcb circuit c101 f3 1d2 c102 f2 1d3 c103 k1 1d5 c104 f4 1e3 c105 e4 1d3 c106 g1 1c4 c107 f1 1c2 c108 g1 1c3 c109 e4 1c3 c110 f4 1b2 c111 f4 1b2 c112 m3 1e5 c113 m3...

  • Page 540

    540 installing a remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 board layout ipn 220-02122-02.

  • Page 541

    Tm8100/tm8200 service manual installing a remote kit 541 © tait electronics limitednovember 2007 circuit diagram.

  • Page 542

    Ref. Ipn description ref. Ipn description ref. Pcb circuit ref. Pcb circuit ref. Pcb circuit 542 installing a remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 c1 015-06470-01 cap cer 1206 470n x7r 20% 50v c2 018-14470-00 cap 0603 4n7 50v x7r±10% c3 015-07220-08 cap ce...

  • Page 543

    Tm8100/tm8200 service manual installing a remote kit 543 © tait electronics limitednovember 2007 board layout ipn 220-02123-01.

  • Page 544

    544 installing a remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 circuit diagram.

  • Page 545: 26.1

    Tm8100/tm8200 service manual installing an enhanced remote kit 545 © tait electronics limitednovember 2007 26 installing an enhanced remote kit the control head of a graphical-display radio can be installed remotely from the radio body. The diagram below shows the parts used for this installation. N...

  • Page 546

    546 installing an enhanced remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 26.1.1 overview installing the control head remotely is done in six steps: 1. Remove the control head from the radio body, if necessary. 2. Install the torso interface b onto the radio body. 3...

  • Page 547: –

    Tm8100/tm8200 service manual installing an enhanced remote kit 547 © tait electronics limitednovember 2007 26.1.3 removing the control head from the radio body (if necessary) caution during this procedure, take care that the control- head seal is not damaged. Damage to this seal reduces environmenta...

  • Page 548

    548 installing an enhanced remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 26.1.5 mounting the remote u-bracket the remote u-bracket with its self-drilling screws, is used to install the remote control-head assembly on the dashboard or on any sufficiently flat surfac...

  • Page 549

    Tm8100/tm8200 service manual installing an enhanced remote kit 549 © tait electronics limitednovember 2007 u-bracket), the control-head interface loom i must be moved, so that it can reach the control head connector. To move the control-head interface loom: 1. Undo the seven torx t-10 screws on the ...

  • Page 550

    550 installing an enhanced remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 4. Screw the u-bracket in the chosen mounting position using the self- drilling screws washers. Installing the radio body in the u-bracket 1. Connect the antenna and power cables to the rear o...

  • Page 551: 26.2

    Tm8100/tm8200 service manual installing an enhanced remote kit 551 © tait electronics limitednovember 2007 26.2 circuit description figure 26.3 shows a block diagram of the remote control-head installation. Both control heads contain a circuit board with audio amplifiers and rs- 485 driver component...

  • Page 552: 26.3

    552 installing an enhanced remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 26.3 servicing the remote control-head installation parts 26.3.1 disassembling the torso interface disassemble only as much as is necessary to replace the defective parts. Re-assembly is carri...

  • Page 553

    Tm8100/tm8200 service manual installing an enhanced remote kit 553 © tait electronics limitednovember 2007 26.3.2 disassembling the control-head interface disassemble only as much as necessary to replace the defective parts or to swap the micromatch connector loom. Re-assembly is carried out in reve...

  • Page 554: 26.4

    Ref. Ipn description ref. Ipn description 554 installing an enhanced remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 26.4 pcb information 26.4.1 tmaa03-03 control-head interface (pcb ipn 220-01721-04) parts list c1 016-08100-03 cap elec smd 10uf 35v 105/2000 c100 018...

  • Page 555

    Ref. Ipn description ref. Ipn description ref. Pcb circuit ref. Pcb circuit ref. Pcb circuit tm8100/tm8200 service manual installing an enhanced remote kit 555 © tait electronics limitednovember 2007 r701 038-16120-10 res 0603 120k 1% 1/10w r710 036-13100-10 res 0805 100r 1% 1/8w r720 038-15100-10 r...

  • Page 556

    556 installing an enhanced remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 board layout ipn 220-01721-04.

  • Page 557

    Tm8100/tm8200 service manual installing an enhanced remote kit 557 © tait electronics limitednovember 2007 circuit diagram.

  • Page 558

    Ref. Ipn description ref. Ipn description ref. Pcb circuit ref. Pcb circuit ref. Pcb circuit 558 installing an enhanced remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 c1 018-16100-00 cap 0603 100n 16v x7r + - 10% c2 015-07470-20 cap cer 1206 4u7 10% 25v x7r c3 015-0...

  • Page 559

    Tm8100/tm8200 service manual installing an enhanced remote kit 559 © tait electronics limitednovember 2007 board layout ipn 220-01720-05.

  • Page 560

    560 installing an enhanced remote kit tm8100/tm8200 service manual © tait electronics limited november 2007 circuit diagram.

  • Page 561

    Tm8100/tm8200 service manual tmaa03-31 control head interface box 561 © tait electronics limitednovember 2007 27 tmaa03-31 control head interface box the tmaa03-31 control head interface box is used as part of the installation of dual-head radio systems. The tmaa03-31interface box is used with the f...

  • Page 562: 27.1

    562 tmaa03-31 control head interface box tm8100/tm8200 service manual © tait electronics limited november 2007 27.1 interface specification the following table and diagram summarizes the signals used for all the connectors on the control head interface box. Table 27.1 power connector pl100—pins and ...

  • Page 563: 27.2

    Tm8100/tm8200 service manual tmaa03-31 control head interface box 563 © tait electronics limitednovember 2007 27.2 pcb information 27.2.1 tmaa03-31 parts list (pcb ipn 220-02174-03) ref. Ipn description ref. Ipn description c1 018-13100-00 cap 100p 50v npo ±5% 0603 c2 015-06470-01 cap cer 470n 50v 2...

  • Page 564

    564 tmaa03-31 control head interface box tm8100/tm8200 service manual © tait electronics limited november 2007 27.2.2 control head interface box board layouts (top side) ipn 220-02174-03.

  • Page 565

    Tm8100/tm8200 service manual tmaa03-31 control head interface box 565 © tait electronics limitednovember 2007 27.2.3 control head interface box board layouts (bottom side) ipn 220-02174-03.

  • Page 566

    566 tmaa03-31 control head interface box tm8100/tm8200 service manual © tait electronics limited november 2007 27.2.4 control head interface box circuit diagram 20jun07 28feb07 21dec06 ml edwin t some design changes see 0218002-dco.Doc prototype 8v_local 22k 13v8-sw sk201 tue jun 19 16:03:33 2007 22...

  • Page 567: Tmaa03-34 Extender Box

    Tm8100/tm8200 service manual tmaa03-34 extender box 567 © tait electronics limitednovember 2007 28 tmaa03-34 extender box the tmaa03-34 extender box is used in the installation of extended long- run remote radio systems, and provides processing and protection of signals over long distances. The tmaa...

  • Page 568: 28.2

    568 tmaa03-34 extender box tm8100/tm8200 service manual © tait electronics limited november 2007 28.2 pcb information 28.2.1 tmaa03-34 parts list (pcb ipn 220-02180-02) ref. Ipn description ref. Ipn description c1 018-13270-00 cap 270p 50v npo ±5% 0603 c2 018-13270-00 cap 270p 50v npo ±5% 0603 c3 01...

  • Page 569

    Tm8100/tm8200 service manual tmaa03-34 extender box 569 © tait electronics limitednovember 2007 r18 038-16100-10 res 0603 100k 1% 1/10w r19 038-15270-20 res 0603 27k 0.5% 1/10w r20 038-15470-10 res 0603 47k 1% 1/10w r21 038-15680-10 res 0603 68k1 1% 1/10w r22 038-14220-10 res 0603 2k2 1% 1/10w r23 0...

  • Page 570

    570 tmaa03-34 extender box tm8100/tm8200 service manual © tait electronics limited november 2007 28.2.2 extender box board layouts (top side) ipn 220-02180-02.

  • Page 571

    Tm8100/tm8200 service manual tmaa03-34 extender box 571 © tait electronics limitednovember 2007 28.2.3 extender box board layouts (bottom side) ipn 220-02180-02.

  • Page 572

    572 tmaa03-34 extender box tm8100/tm8200 service manual © tait electronics limited november 2007 28.2.4 extender box circuit diagram 1nf c49 220 r41 220 bav99 bav99 0 100k 270pf ts912 send- bat54aw lf80cpt 4v 9.1v link rd_ch_on_off rec- agnd agnd dgnd rec+ 270pf on_off 100k 270pf rd_13v8_sw rd_rs485...

  • Page 573: 29.1

    Tm8100/tm8200 service manual tmaa04-04 crossband linking cable 573 © tait electronics limited november 2007 29 tmaa04-04 crossband linking cable the tmaa04-04 crossband linking cable is used to connect the auxiliary connectors of two radios configured as a crossband repeater. Components in the tmaa0...

  • Page 574

    574 tmaa04-04 crossband linking cable tm8100/tm8200 service manual © tait electronics limited november 2007 programmable i/o form—digital tab the following table shows the crossband linking settings required in the digital tab of the programmable i/o form. Programmable i/o form—audio tab the followi...

  • Page 575: 29.3

    Tm8100/tm8200 service manual tmaa04-04 crossband linking cable 575 © tait electronics limited november 2007 29.3 operational testing 1. On the receiving radio, inject an on-channel rf signal at a level of -70dbm, modulated to ±3khz deviation (wide bandwidth channel) or ±1.5khz (narrow bandwidth chan...

  • Page 576: 29.5

    576 tmaa04-04 crossband linking cable tm8100/tm8200 service manual © tait electronics limited november 2007 29.5 pcb information 29.5.1 tmaa04-04 parts list (pcb ipn 220-02127-03) 29.5.2 crossband linking board layouts ref. Ipn description ref. Ipn description c2 018-27470-00 cap cer 0603 4u7 6v3 10...

  • Page 577

    Tm8100/tm8200 service manual tmaa04-04 crossband linking cable 577 © tait electronics limited november 2007 29.5.3 crossband linking board circuit diagram fri oct 19 16:10:55 2007 1.2k 1.2k 4.7uf i/opad 4.7uf i/opad 22uf dave w dave w dave e steve c 11sept07 02a chris k edwin t 07/12/05 -- i/opad i/...

  • Page 578

    578 tmaa04-04 crossband linking cable tm8100/tm8200 service manual © tait electronics limited november 2007.

  • Page 579: Tmaa04-05 Ignition Sense Kit

    Tm8100/tm8200 service manual tmaa04-05 ignition sense kit 579 © tait electronics limitednovember 2007 30 tmaa04-05 ignition sense kit the tmaa04-05 ignition sense kit provides a mating plug for the radio’s auxiliary connector. The four metre length of cable from pin 4 (aux_gpi3) of the plug connects...

  • Page 580: 30.3

    580 tmaa04-05 ignition sense kit tm8100/tm8200 service manual © tait electronics limited november 2007 30.3 radio programming startup/shutdown form in the power on mode field, set how the radio responds when the radio receives a signal to power on from the vehicle’s ignition signal. ■ select either ...

  • Page 581: 31.1

    Tm8100/tm8200 service manual tmaa04-06 linking and interface cable 581 © tait electronics limited november 2007 31 tmaa04-06 linking and interface cable the tmaa04-06 cross-band linking, gps, and external interface cable is used to extend the features available with tm8260 dual radio systems. Using ...

  • Page 582

    582 tmaa04-06 linking and interface cable tm8100/tm8200 service manual © tait electronics limited november 2007 31.1.2 radio programming programmable i/o and audio settings at a minimum, settings in table 31.1 , table 31.2 , and table 31.3 must be programmed for both radios. Receive and transmit set...

  • Page 583

    Tm8100/tm8200 service manual tmaa04-06 linking and interface cable 583 © tait electronics limited november 2007 channels there is a brief break in reception, which will cause the transmit timer to restart. Squelch override is not compatible with cross-band repeater operation. Avoid programming this ...

  • Page 584: 31.2

    584 tmaa04-06 linking and interface cable tm8100/tm8200 service manual © tait electronics limited november 2007 31.2 connecting to a gps device the cable provides an rj-45 socket, which is used to connect a tm8260 dual radio system to a gps device such as a garmin-16hvs antenna/receiver (product cod...

  • Page 585: 31.4

    Tm8100/tm8200 service manual tmaa04-06 linking and interface cable 585 © tait electronics limited november 2007 31.4 connecting to an external alert device the cable’s external interface connector can be used to connect a tm8260 dual radio system to an external alert device in the vehicle. This enab...

  • Page 586: 31.5

    586 tmaa04-06 linking and interface cable tm8100/tm8200 service manual © tait electronics limited november 2007 31.5 interface specification the following table and diagram summarizes the signals used for all the connectors on the cable, and shows the interfaces between the cable and the radios. Tab...

  • Page 587: 31.6

    Tm8100/tm8200 service manual tmaa04-06 linking and interface cable 587 © tait electronics limited november 2007 31.6 pcb information 31.6.1 tmaa04-06 parts list (pcb ipn 220-01755-01) 31.6.2 linking and interface cable board layouts ref. Ipn description ref. Ipn description 219-03081-00 cbl assy tma...

  • Page 588

    588 tmaa04-06 linking and interface cable tm8100/tm8200 service manual © tait electronics limited november 2007 31.6.3 linking and interface cable circuit diagram gpio7 ign sense signal from master (13v8_sw) f1 changed to 0 ohm link (0805) r9 changed to 5.6k ohm j16 and j17 not fitted f2 not fitted ...

  • Page 589: Tmaa10-01 Desktop Microphone

    Tm8100/tm8200 service manual tmaa10-01 desktop microphone 589 © tait electronics limited november 2007 32 tmaa10-01 desktop microphone the tmaa10-01 desktop microphone is an omnidirectional dynamic microphone which can be used in dispatch situations, where the microphone is positioned on a flat surf...

  • Page 590: 32.3

    590 tmaa10-01 desktop microphone tm8100/tm8200 service manual © tait electronics limited november 2007 3. Squeeze the grommet and push the remaining corners into position. 4. Check that the grommet is seated correctly in the cavity. 32.3 adjustment adjust the output sensitivity of the desktop microp...

  • Page 591: 32.5

    Tm8100/tm8200 service manual tmaa10-01 desktop microphone 591 © tait electronics limited november 2007 . 32.5 circuit description the desktop microphone uses a dynamic microphone capsule and contains a pre-amplifier (q1) to boost the microphone level to that required by the radio. Power for the pre-...

  • Page 592

    592 tmaa10-01 desktop microphone tm8100/tm8200 service manual © tait electronics limited november 2007.

  • Page 593: Tmaa10-02 Handset

    Tm8100/tm8200 service manual tmaa10-02 handset 593 © tait electronics limited november 2007 33 tmaa10-02 handset the tmaa10-02 handset provides the user with privacy and also improves the audio quality in noisy environments. The handset uses a dynamic microphone capsule, therefore the radio control ...

  • Page 594

    594 tmaa10-02 handset tm8100/tm8200 service manual © tait electronics limited november 2007 33.1.2 handset installation 1. Press the pushbutton and remove the handset from the locking cradle. 2. Disassemble the locking cradle by removing the four locking cradle screws. 3. Screw the handset mounting ...

  • Page 595: 33.2

    Tm8100/tm8200 service manual tmaa10-02 handset 595 © tait electronics limited november 2007 33.2 radio programming dynamic microphone support dynamic microphone support must be enabled in the ui preferences form of the radio’s programming application, so that audio is optomized for dynamic microphon...

  • Page 596: 33.3

    596 tmaa10-02 handset tm8100/tm8200 service manual © tait electronics limited november 2007 33.3 interface specification the following table and diagram summarizes the signals used for the handset on the radio’s microphone connector and shows the interface between the handset and the radio. . Table ...

  • Page 597: Tmaa10-03 and Tmaa10-06

    Tm8100/tm8200 service manual tmaa10-03 and tmaa10-06 high-power remote speakers 597 © tait electronics limited november 2007 34 tmaa10-03 and tmaa10-06 high-power remote speakers the tmaa10-03 remote speaker (for the 25w radio) and the tmaa10-06 remote speaker (for the 40w/50w radio) are installed i...

  • Page 598

    598 tmaa10-03 and tmaa10-06 high-power remote speakers tm8100/tm8200 service manual © tait electronics limited november 2007 4. Run the free end of the speaker cable to the radio power cable and install the two receptacles in the power connector, as described in the “power connector wiring” procedur...

  • Page 599: Tmaa10-04 Remote Ptt Kit and

    Tm8100/tm8200 service manual tmaa10-04 remote ptt kit and tmaa10-05 hands-free kit 599 © tait electronics limited november 2007 35 tmaa10-04 remote ptt kit and tmaa10-05 hands-free kit the tmaa10-04 remote ptt kit and the tmaa10-05 hands-free kit plug into the radio’s auxiliary connector. Both kits ...

  • Page 600: 35.2

    600 tmaa10-04 remote ptt kit and tmaa10-05 hands-free kit tm8100/tm8200 service manual © tait electronics limited november 2007 2. In the vox menu, choose on. 3. Press select. While vox is on, the vox indication may be programmed to appear below the channel infor- mation on your display. Changing th...

  • Page 601

    Tm8100/tm8200 service manual tmaa10-04 remote ptt kit and tmaa10-05 hands-free kit 601 © tait electronics limited november 2007 2. Check that the cord and lead do not interfere with the safe operation of the vehicle. 35.3 radio programming for the tmaa10-04 remote ptt kit remote ptt settings in the ...

  • Page 602: 35.5

    602 tmaa10-04 remote ptt kit and tmaa10-05 hands-free kit tm8100/tm8200 service manual © tait electronics limited november 2007 35.4 radio programming for the tmaa10-05 hands-free kit vox settings in the ptt form the following table shows the settings required in the ptt form of the programming appl...

  • Page 603: 35.6

    Tm8100/tm8200 service manual tmaa10-04 remote ptt kit and tmaa10-05 hands-free kit 603 © tait electronics limited november 2007 . 35.6 circuit description the remote microphone signal is amplified by a pre-amplifier in the auxiliary connector plug. The power supply to this amplifier is provided by t...

  • Page 604: 35.7

    604 tmaa10-04 remote ptt kit and tmaa10-05 hands-free kit tm8100/tm8200 service manual © tait electronics limited november 2007 ref. Ipn description ref. Ipn description 35.7 pcb information 35.7.1 tmaa10-04/tmaa10-05 parts list (pcb ipn 220-01711-01) c2 015-26330-08 cap cer 0805 330n 5% 10v x7r c3 ...

  • Page 605

    Tm8100/tm8200 service manual tmaa10-04 remote ptt kit and tmaa10-05 hands-free kit 605 © tait electronics limited november 2007 35.7.2 pre-amplifier board layout ipn 220-01711-01 ipn 220-01711-01.

  • Page 606

    606 tmaa10-04 remote ptt kit and tmaa10-05 hands-free kit tm8100/tm8200 service manual © tait electronics limited november 2007 35.7.3 pre-amplifier board circuit diagram.

  • Page 607: Tmaa10-07 Desktop Microphone

    Tm8100/tm8200 service manual tmaa10-07 desktop microphone 607 © tait electronics limited november 2007 36 tmaa10-07 desktop microphone the tmaa10-01 desktop microphone is an omnidirectional dynamic microphone which can be used in dispatch situations, where the microphone is positioned on a flat surf...

  • Page 608: 36.3

    608 tmaa10-07 desktop microphone tm8100/tm8200 service manual © tait electronics limited november 2007 2. Slide the grommet along the cord and push two adjacent corners of the grommet into the microphone socket cavity. 3. Squeeze the grommet and push the remaining corners into position. 4. Check tha...

  • Page 609: Tmaa10-08 Desktop Microphone

    Tm8100/tm8200 service manual tmaa10-08 desktop microphone 609 © tait electronics limited november 2007 37 tmaa10-08 desktop microphone the tmaa10-08 desktop microphone is an omnidirectional electret microphone which can be used in dispatch situations, where the microphone is positioned on a flat sur...

  • Page 610: 37.3

    610 tmaa10-08 desktop microphone tm8100/tm8200 service manual © tait electronics limited november 2007 3. Squeeze the grommet and push the remaining corners into position. 4. Check that the grommet is seated correctly in the cavity. 37.3 adjustment adjust the output level of the desktop microphone u...

  • Page 611: 37.5

    Tm8100/tm8200 service manual tmaa10-08 desktop microphone 611 © tait electronics limited november 2007 programming the monitor key program the monitor key according to the hookswitch settings in the tm8100 or tm8200 programming application, as follows: 1. Tm8100 radios: select the hookswitch monitor...

  • Page 612

    612 tmaa10-08 desktop microphone tm8100/tm8200 service manual © tait electronics limited november 2007.

  • Page 613: Topa-Sv-024 Test Unit

    Tm8100/tm8200 service manual topa-sv-024 test unit 613 © tait electronics limitednovember 2007 38 topa-sv-024 test unit the topa-sv-024 test unit is used to test and maintain tait portable and mobile radios by providing an interface between the radio, a test pc, and an rf communications test set. Th...

  • Page 614

    614 topa-sv-024 test unit tm8100/tm8200 service manual © tait electronics limitednovember 2007 figure 38.2 test equipment setup radio connector (db15) rf connector (mini uhf or bnc) auxiliary connector (db15) microphone connector (rj45) receive audio / sinad connector (bnc) transmit audio connector ...

  • Page 615: 38.2

    Tm8100/tm8200 service manual topa-sv-024 test unit 615 © tait electronics limitednovember 2007 38.2 operation this section explains the function of the topa-sv-024 test unit controls. The procedure for using the test unit is described in the relevant section on test equipment setup. 38.2.1 portable ...

  • Page 616

    616 topa-sv-024 test unit tm8100/tm8200 service manual © tait electronics limitednovember 2007 38.2.4 rx / tx/ptt switch this 2-way toggle switch is used to switch between receive and transmit mode. ■ when set to rx, the ptt line is switched to high impedance. ■ when set to tx/ptt, the ptt line is p...

  • Page 617: 38.3

    Tm8100/tm8200 service manual topa-sv-024 test unit 617 © tait electronics limitednovember 2007 38.3 pcb information 38.3.1 parts list (pcb ipn 220-01418-02a rev. 4) 38.3.2 pcb layout bnc1 240-02100-11 skt coax bnc 3.5mm pnl n/tag bnc2 240-02100-11 skt coax bnc 3.5mm pnl n/tag c1 011-54100-01 cap cer...

  • Page 618

    618 topa-sv-024 test unit tm8100/tm8200 service manual © tait electronics limitednovember 2007 38.3.3 circuit diagram th e component v alues in the sche mat ic diagr am ar e in di ca tive on ly . Refer t o t he pa rt s li st for ac tu al v al ues used. S pea ke r 4 Ω sp kr 8 .2 Ω sh o ul d b e dp tt...

  • Page 619

    Tm8100/tm8200 service manual 619 © tait electronics limitednovember 2007 tait general software licence agreement this legal document is an agreement between you (the “licensee”) and tait electronics limited (“tait”). By using any of the software or firmware items prior-installed in the related tait ...

  • Page 620

    620 tm8100/tm8200 service manual © tait electronics limited november 2007 limited warranty the software or firmware ( including open source components ) is supplied by tait and accepted by the licensee “ as is ” without warranty of any kind either expressed or implied , including but not being limit...